MAT121-Primm-Online 23SU9461 > Assessment

Review: Test Lessons 6 & 7

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Question 8

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t

H(t)

0

The Falling Rock

A rock falls from a bridge into the water below. The function H(t) = −16t² + 169 gives

the height (measured in feet) of the rock above the water after t seconds. Use this

information to complete the table below.

1. How high was the bridge?

>

1

1.25

2. How long does it take for the rock to hit the water?

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Use the table to answer the questions below.

Your answers must include units of measure. Do not abbreviate the units.

3. Determine the practical domain in this situation.

4. Determine the practical range in this situation.

H(t) <

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+

2

2.25

44

3.25