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Alondra wrote the function f(x) = x²-36 on her paper. Which statement is true about the

function?

• The only zero, 6, can be found when 0 = (x – 6) (x – 6).

• The zeros, –6 and 6, can be found when 0 = (x + 6) (x – 6).

• The only zero, 18, can be found when 0 = (x – 18) (x – 18).

• The zeros, –18 and 18, can be found when 0 = (x + 18) (x – 18).

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Mr. Miller wrote the function 9x²= 225 on a whiteboard. What are the solutions to the function?

• ±5

• ±6

• ±12

• ±15

Tags

CCSS.8.EE.A.2

Jeniece is testing a physics equation she learned today. Making sure the sidewalk below is clear

of people first, she drops a penny and an orange from her apartment window, 72 feet above the

sidewalk. Jeniece notices that both objects take the same amount of time to fall, based on the

equation -32x²= -72. How many seconds, x, did it take both objects to fall to the sidewalk?

• -1.5 seconds

• -2√10

• 1.5 seconds

• 2√10

Antwon solved the quadratic equation 0 = 1/3x²-3. What is the positive solution? Just write the number.

Tags

CCSS.8.EE.A.2

Jo is working on a building project. They have determined that the next step of their project

requires using one of the zeros of the quadratic function 5(x+3)²=75. What are the solutions?

• √15

Tags

CCSS.8.EE.A.2