Unit 8 Test Study Guide

Find the vertex y=2x^2+4x

(-1,-2)

Natalie found a tennis ball outside a tennis court. She picked up the ball and threw it over the fence into the court. The path of the ball can be represented by h=-16t^2+18t+5. How long will it take to reach the ground?

1.36

Natalie found a tennis ball outside a tennis court. She picked up the ball and threw it over the fence into the court. The path of the ball can be represented by h=-16t^2+18t+5. What is the maximum height?

10.06

The length of a rectangle is five feet less than its width. If the area of the rectangle is 84 square feet, find its dimensions.

12 x 7

A circus acrobat is show out of a cannon with an initial upward speed of 50 ft/s. The equation for the acrobat's pathway can be modeled by h=-16t^2+50t+4. How long will it take to reach the ground?

3.20

A circus acrobat is show out of a cannon with an initial upward speed of 50 ft/s. The equation for the acrobat's pathway can be modeled by h=-16t^2+50t+4. Find the maximum height of the acrobat.

43.06

Find the zeros y=-2x^2-3

No solution

Find the AOS y=x^2-9

x=0

Find the Axis of Symmetry y=-x^2+10x-28

x=5

Find the value of x when the area of a rectangle is 42. One side is (x+8), and the other side is (x-3).

x=6

Solve x^2-100=0

x={-10,10}

Solve 11x^2-x=x^2+2

x={-2/5,1/2}

Solve 25x^2+1=5

x={-2/5,2/5}

Solve -x^2+4x=x-20

x={-3.22,6.22}

Solve x^2-x=18

x={-3.77,4.77}

Solve x^2-7x=44

x={-4,11}

Solve (x-7)(x+3)=24

x={-5,9}

Solve 2x^2+3x-72=x^2+2x

x={-9,8}

Solve 8x^2=20x

x={0,2.5}

Solve 9x^2-36x=0

x={0,4}

Solve 16x^2=10x

x={0,5/8}

Solve (x-1)(x-8)=0

x={1,8}

Find the zeros y=-x^2+4x-4

x={2}

Find the zeros y=x^2-8x+15

x={3,5}

Solve 3x^2+75=30x

x={5}