CP8 Review Quadratic Solutions

Based on the graph, what are the roots of the quadratic function?

• 8

• 2 and 9

• -4 and 8

• cannot be determined

Tags

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

What is the solution set of the quadratic function?

• {2,4}

• {8,4,2}

• {4,8}

• {8}

What is the solution set for the equation
2(2x-1)² =18

• {-2.5,3.5}

• {-3.5,.2.5}

• {-2,1}

• {-1,2}

Tags

CCSS.HSA-REI.B.4B

What is the solution set for the quadratic equation

-16x=x²+15

• {-8,2}

• {-8,4}

• {-15,-1}

• {1,15}

Tags

CCSS.HSA-REI.B.4B

What is the solution set for the quadratic equation

7x²-18x=-8

• {2, 4/7}

• {2, -4/7}

• {8, 0}

• {0, 8}

Tags

CCSS.HSA-REI.B.4B

A quadratic equation is graphed on the set of axes. Based on the graph, what are the roots of the quadratic equation?

• -2 and 0

• -1 and 2

• -2 and 1

• 2 and 0

• 95 feet

• 45 feet

• 70 feet

• 171.56 feet

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

Jason jumped off of a cliff into the ocean in Acapulco while vacationing with some friends. His height as a function of time could be modeled by the function h(t) = –16t² + 16t + 480, where t is the time in seconds and h is the height in feet. Which time best approximates the number of seconds it will takes for Jason to reach a height of 85 feet?

• 4.76 seconds

• 5.18 seconds

• 5.49 seconds

• 6 seconds

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

The function f(t) = -5t²+20t + 60 models the approximate height of an object t seconds after it is launched. Which time best approximates the number of seconds for the object to reach a height of 40 feet?

• 4.83 seconds

• 4.42 seconds

• 4.12 seconds

• 4.95 seconds

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4