Algebra I Chapter 7 Test: Formulas and Functions

If $a^{2}+b^{2}=c^{2}$, $a=9$, and $b=20$, then $c=$___?

The solution set for the equation $x^{2}-6x=0$ is

The midpoint of the segment between the points $(5,-8)$ and $(11,2)$ is

If $P=2l+w$, then $l=$____

In a set of data, the number that occurs the greatest number of times is called its

The volume of a rectangular box with dimensions 4 inches, 5 inches, and 6 inches is

The natural domain of $y=\sqrt{2x-20}$ is the set of real numbers greater than or equal to

The graph of the equation $y=4$ is a horizontal line.

If $2x^{2}+8x+5=0$, then $x=\frac{-8\pm\sqrt{64+40}}{4}$

Another name for the set of outputs of a function is the domain of the function.

Every quadratic equation has at least two real solutions.

Any set of ordered pairs is called a function.

When $f(x)=5x-3$ and $g(x)=|x+2|$, what is $f(3)\cdot g(-8)$?

When $f(x)=5x-3$ and $g(x)=|x+2|$, what is $f(x+6)$?

Solve $i=prt$ for $t$.

Solve $ax+by=c$ for $y$.

For the points (6,8) and (-3,-2), find the slope.

For the points (6,8) and (-3,-2), find the midpoint.

For the points (6,8) and (-3,-2), find the length.

If $f(x)=-\frac{2}{7}x-3$, find $f(-21)$.

If $f(x)=-\frac{2}{7}x-3$, find $C$ when $f(C)=-5$.

Use the quadratic formula to solve. Begin answer with $x=$ and separate answer(s) with a comma (no spaces).

$x^{2}-x-3=0$.

Find the natural domain for $f(x)=x^{2}-25$.

Find the natural domain for $g(x)=\frac{\sqrt{x-2}}{\sqrt{x^{2}-25}}$.