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Davio bought some potatoes and celery. The potatoes cost $0.69 per pound, and the celery cost $0.99 per pound. If Davio spent $5.34 in total and bought twice as many pounds of celery as pounds of potatoes, how many pounds of celery did Davio buy?
Math
Algebra
What is the solution to the equation $2x+3 = 7$?
Math
Algebra
$\frac{1}{2}$
Math
Algebra
$\begin{tabular}{c|c} \hline Year & Population \\ \hline
2000 & 862 \\ \hline
2010 & 846 \\ \hline \end{tabular}$ The table above shows the population of Greenleaf, Idaho, for the years 2000 and 2010. If the relationship between population and year is linear, which of the following functions $P$ models the population of Greenleaf $t$ years after 2000?
Math
Algebra
Angela is playing a video game. In this game, players can score points only by collecting coins and stars. Each coin is worth $\(c\)$ points, and each star is worth $\(s\)$ points.
* The first time she played, Angela scored 700 points. She collected 20 coins and 10 stars.
* The second time she played, Angela scored 850 points. She collected 25 coins and 12 stars.
Which system of equations can be used to correctly determine the values of $\(c\)$ and $\(s\)$ ?
* $\(10c+20s=700\)$
* $\(12c+25s=850\)$
* $\(20c+10s=700\)$
* $\(25c+12s=850\)$
* $\(20c+700s=10\)$
* $\(25c+850s=12\)$
Math
Algebra
Last week, an interior designer earned a total of $1,258 from consulting for $\bm{x}$ hours and drawing up plans for $\bm{y}$ hours. The equation $68\bm{x}+85\bm{y}=\bm{1}$,258$ represents this situation. Which of the following is the best interpretation of 68 in this context?
Math
Algebra
For groups of 25 or more people, a museum charges $21 per person for the first 25 people and $14 for each additional person. Which function $\bm{f}$ gives the total charge, in dollars, for a tour group with $\bm{n}$ people, where $\bm{n}\geq 25$?
Math
Algebra
$P(t)=250+10t$
The population of snow leopards in a certain area can be modeled by the function $P$ defined above, where $P(t)$ is the population $t$ years after 1990. Of the following, which is the best interpretation of the equation $P(30)=550$ ?
Math
Algebra
A movie theater charges $11 for each full-price ticket and $8.25 for each reduced-price ticket. For one movie showing, the theater sold a total of 214 full-price and reduced-price tickets for $2,145. Which of the following systems of equations could be used to determine the number of full-price tickets, $f$, and the number of reduced-price tickets, $r$, sold?
\begin{tabular}{l l} $f+r=2,145$ \\ $11f+8.25r=214$ \\ $f+r=214$ \\ $8.25f+11r=2,145$ \\ $f+r=2,145$ \\ $8.25f+11r=214$ \\ \end{tabular}
Math
Algebra
A discount airline sells a certain number of tickets, $x$, for a flight for $90 each. It sells the number of remaining tickets, $y$, for $250 each. For a particular flight, the airline sold 120 tickets and collected a total of $27,600 from the sale of those tickets. Which system of equations represents this relationship between $x$ and $y$ ?
$\begin{array}{l}\mbox{\small$\{x+y=120\}$}\\ \mbox{\small$\{90x+250y=27,600\}$}\\ \mbox{\small$\{x+y=120\}$}\\ \mbox{\small$\{90x+250y=120(27,600)\}$}\\ \mbox{\small$\{x+y=27,600\}$}\\ \mbox{\small$\{90x+250y=120(27,600)\}$}\\ \mbox{\small$\{120x+120y=27,600\}$}\\ \end{array}$
Math
Algebra
$\frac{1}{4}\left(x+5\right)-\frac{1}{3}\left(x+5\right)=-7$
What value of $x$ is the solution to the given equation?
Math
Algebra
Robert rented a truck to transport materials he purchased from a hardware store. He was charged an initial fee of $20.00 plus an additional $0.70 per mile driven. If the truck was driven 38 miles, what was the total amount Robert was charged?
Math
Algebra
$\frac{1}{2}$
Math
Algebra
A science teacher is preparing the 5 stations of a science laboratory. Each station will have either Experiment A materials or Experiment B materials, but not both. Experiment A requires 6 teaspoons of salt, and Experiment B requires 4 teaspoons of salt. If $x$ is the number of stations that will be set up for Experiment A and the remaining stations will be set up for Experiment B, which of the following expressions represents the total number of teaspoons of salt required?
Math
Algebra
An online bookstore sells novels and magazines. Each novel sells for $4, and each magazine sells for $1. If Sadie purchased a total of 11 novels and magazines that have a combined selling price of $20, how many novels did she purchase?
Math
Algebra
$y=6x+18$
One of the equations in a system of two linear equations is given. The system has no solution. Which equation could be the second equation in the system?
Math
Algebra
The graph of the function $f$ is a line in the $xy$-plane. If the line has slope $\boldsymbol{4}$ and $f(0)=3$, which of the following defines $f$?
$$\mbox{\tiny
Math
Algebra
Scientists collected fallen acorns that each housed a colony of the ant species _P. ohoensis_ and analyzed each colony's structure. For any of these colonies, if the colony has $\bm{x}$ worker ants, the equation $\bm{y}=0.67\bm{x}+2.6$, where $\bm{20}\leq\bm{x}\leq\bm{110}$, gives the predicted number of larvae, $\bm{y}$, in the colony. If one of these colonies has 58 worker ants, which of the following is closest to the predicted number of larvae in the colony?
#### b.61
C. 83
D. 190
Math
Algebra
May walks at a speed of 3 miles per hour and runs at a speed of 5 miles per hour. He walks for $w$ hours and runs for $r$ hours for a combined total of 14 miles. Which equation represents this situation?
Math
Algebra
A neighborhood consists of a 2-hectare park and a 35-hectare residential area. The total number of trees in the neighborhood is 3,934. The equation $2x+35y=3,934$ represents this situation. Which of the following is the best interpretation of $x$ in this context?
Math
Algebra
The width of a rectangular dance floor is $w$ feet. The length of the floor is 6 feet longer than its width. Which of the following expresses the perimeter, in feet, of the dance floor in terms of $w$ ?
Math
Algebra
The minimum value of $x$ is 12 less than 6 times another number $n$. Which inequality shows the possible values of $x$?
Math
Algebra
$\begin{tabular}{|c|c|} \hline $x$ & $y$ \\ \hline $-6$ & $n+184$ \\ \hline $-3$ & $n+92$ \\ \hline $0$ & $n$ \\ \hline \end{tabular}$ The table shows three values of $x$ and their corresponding values of $y$, where $n$ is a constant, for the linear relationship between $x$ and $y$. What is the slope of the line that represents this relationship in the $xy$-plane?
Math
Algebra
Henry receives a $60.00 gift card to pay for movies online. He uses his gift card to buy 3 movies for $7.50 each. If he spends the rest of his gift card balance on renting movies for $.
Math
Algebra
The average annual energy cost for a certain home is $4,334. The homeowner plans to spend $25,000 to install a geothermal heating system. The homeowner estimates that the average annual energy cost will then be $2,712. Which of the following inequalities can be solved to find $t$, the number of years after installation at which the total amount of energy cost savings will exceed the installation cost?
Math
Algebra
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