Mathematical Modeling: Part Three — Test

Question 1

The function h of t is equal to negative 4 point 8 7 t squared plus 18 point 7 5 t is used to model the height of an object projected in the air, where h of t is the height in meters and t is the time in seconds. What are the domain and range of the function h of t ? Round values to the nearest hundredth.

Revolt · Accepted Answer

domain: left bracket 0 comma 3 point 8 5 right bracket range: left bracket 0 comma 18 point 0 5 right bracket

Question 2

Whose work is correct?

Revolt · Accepted Answer

Malik’s work

Question 3

If all city buses carry the same number of passengers, what is the least number of buses needed to carry 710 passengers?

Revolt · Accepted Answer

11

Question 4

What are the domain and range of the step function?

Revolt · Accepted Answer

domain = {all real numbers}, range is equal to dot dot dot minus 4 comma negative 1 comma 2 comma 5 comma dot dot dot

Question 5

What is the domain of the graphed function?

Revolt · Accepted Answer

left parenthesis negative 2 comma 4 right bracket and left bracket 7 comma infinity right parenthesis

Mathematical Modeling: Part Three — Test Answers

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