Math 1 March 8 2021

Math 1 March 8 2021

Example 1

 $\left(x-8\right)\left(2x-4\right)$  

Example 2

 $\left(6x-6\right)\left(6x+7\right)$  

Example 3

 $\left(4x-3\right)\left(x-4\right)$  

Example 4

 $\left(7x-8\right)\left(5x+7\right)$  

Example 5

 $\left(x-5y\right)\left(3x-5y\right)$  

Example 6

 $\left(7x-6y\right)\left(4x-6y\right)$  

Example 7

The length of a rectangle is 5 inches greater than the width. Write a simplified expression for the area of the rectangle. 

Multiple Choice

Quiz 17 Review Question: Go look up what you answered, keep it the same if it was correct.

The volume (V) of a cylinder can be determined by using the formula   $V=\pi r^2h$   where r equals the radius of the base, and h equals the height of the cylinder. What is the result of solving this equation for r?

•  $r=\frac{V}{2\pi h}$  

•  $r=\sqrt{\frac{V}{\pi h}}$  

•  $r=\sqrt{V-\pi h}$  

•  $r=\frac{V-\pi h}{2}$  

Multiple Choice

Quiz 17 Review Question: Go look up what you answered, keep it the same if it was correct.

The value of a computer has decreased by 23% each year since it was purchased. The computer was valued at $1,500 when it was purchased. Which equation modesl the value of the computer, V, t years after it was purchased?

• $V=1,500\left(0.77\right)^t$

• $V=0.77\left(1,500\right)^t$

• $V=1,500\left(1.23\right)^t$

• $V=1.23\left(1,500\right)^t$