Back to Tutor Intake Assessment: Recognize constant percent rate situations

HSF.LE.A.1.c Tutor Intake — Constant Percent Rate and Exponential Models

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Grade 9·12 problems·~14 min·Common Core Math - HS Functions·standard·hsf-le-a-1c
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A

Concepts

1.

Which statement best describes what "constant percent rate" means?

2.

A population grows by 4% per year. What is the growth factor?
Enter your answer as a decimal (for example, enter 1.06 for a 6% growth factor).

3.

Which of the following phrases signals a constant percent rate (exponential) situation?

4.

A quantity "doubles every 5 years." Which of the following is the correct exponential
function if the initial value is aa?

B

Procedures

1.

A savings account grows by 7% per year. What is the growth factor?
Enter your answer as a decimal (for example, enter 1.05 for a 5% growth factor).

2.

A car depreciates (loses value) by 15% per year. What is the decay factor?
Enter your answer as a decimal.

3.

A growth factor is 1.12. What is the corresponding percent growth rate?
Enter your answer as a whole number (for example, enter 5 for 5%).

4.

A bacterial culture starts with 500 cells and grows by 20% per hour. Which function
gives the number of cells after tt hours?

5.

A medication has a half-life of 6 hours. A patient receives an initial dose of 240 mg.
How many milligrams remain after 18 hours?
Enter a whole number.

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