Unit Test

Question 1

What is the slope of the line that represents the turtle's path?

Revolt · Accepted Answer

0.8

Question 2

Which system models the height of the tennis ball and the height of the dog's mouth over time?

Revolt · Accepted Answer

D: h = -16t2 + 18t + 4.5 and h = -16t2 + 21t + 1.5

Question 3

Which system models this situation?

Revolt · Accepted Answer

B: y = 26x and y = -0.030(x-500)2+15,900

Question 4

Which system models this situation?

Revolt · Accepted Answer

A: h = 3t+10 and h = -16t2+15t+6

Question 5

Which system of equations models the paths of the two skaters?

Revolt · Accepted Answer

A: y = 0.08x2-1.6x+13 and y = 0.08(x-10)2+5

Question 6

Complete the system that models the heights of the ball and the receiver’s hands over time. h = -16t² + 14t +

Revolt · Accepted Answer

Part 1: 6; Part 2: 10; Part 3: 8

Question 7

What are the values of the constants in the vertex form of the quadratic equation that models the bird's path?h = k = a =

Revolt · Accepted Answer

PENDING

Question 8

What does the t-coordinate of the solution to this system represent?

Revolt · Accepted Answer

C: the time at which the ball and the dog's mouth are at the same height

Question 9

How many helmets must the company make and sell to break even? helmets

Revolt · Accepted Answer

600

Question 10

The system has no real solutions. What does this indicate about the worker's arms and the measuring tape?

Revolt · Accepted Answer

A: They will never be at the same height at the same time.

Unit Test Answers