Practice Quiz Mode
Take all 5 MCQs in interactive quiz mode with timer and progress tracking
The function $f$ is defined by $f(x)=5x^{2}$. What is the value of $f(8)$?
Difficulty: Easy
A:
40
B:
50
C:
80
D:
320
Which expression is equivalent to $256w^{2}-676$?
Difficulty: Easy
A:
$(16w-26)(16w-26)$
B:
$(8w-13)(8w+13)$
C:
$(8w-13)(8w-13)$
D:
$(16w-26)(16w+26)$
$h(x)=x^{2}-3$
Which table gives three values of $x$ and their corresponding values of $h(x)$ for the given function $h$?
Difficulty: Easy
A:
| $x$ | $1$ | $2$ | $3$ |
| $h(x)$ | $4$ | $5$ | $6$ |
B:
| $x$ | $1$ | $2$ | $3$ |
| $h(x)$ | $-2$ | $1$ | $6$ |
C:
| $x$ | $1$ | $2$ | $3$ |
| $h(x)$ | $-1$ | $1$ | $3$ |
D:
| $x$ | $1$ | $2$ | $3$ |
| $h(x)$ | $-2$ | $1$ | $3$ |
Bacteria are growing in a liquid growth medium. There were 300,000 cells per milliliter during an initial observation. The number of cells per milliliter doubles every 3 hours. How many cells per milliliter will there be 15 hours after the initial observation?
Difficulty: Medium
A:
1,500,000
B:
2,400,000
C:
4,500,000
D:
9,600,000
$5x + 15$
Which of the following is equivalent to the given expression?
Difficulty: Easy
A:
$5(x + 3)$
B:
$5(x + 10)$
C:
$5(x + 15)$
D:
$5(x + 20)$
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