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12/12/2022-Warm Up-old

Last updated over 2 years ago

8 questions

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Question 1

1.

The mass of certain compound decays at a rate of 5% per year. The original mass of this compound is 68g.

This function will be an example of:

exponential growth

expoential decay

compound interest

Question 2

2.

The mass of certain compound decays at a rate of 5% per year. The original mass of this compound is 68g.

Write a function to model this situation.

Question 3

3.

The mass of certain compound decays at a rate of 5% per year. The original mass of this compound is 68g.

What is the mass of the compound after 7 years? (round to the tenths place)

Question 4

4.

The mass of certain compound decays at a rate of 5% per year. The original mass of this compound is 68g.

How many years will it take for the mass to be 20.9g?

Question 5

5.

Miles invested $2,400 into a retirement account that earns 1.8% interest compounded bimonthly (2x per month).

This function will be an example of:

exponential decay

exponential growth

compound interest

Question 6

6.

Miles invested $2,400 into a retirement account that earns 1.8% interest compounded bimonthly (2x per month).

Write a function to model this situation.

(for n, remember it's the number of times per year...2x per month and 12 months in a year)

Question 7

7.

Miles invested $2,400 into a retirement account that earns 1.8% interest compounded bimonthly (2x per month).

Find the balance in the account after 25 years.
(give your answer in dollars and cents...like $2345.67..rounded to the nearest hundreths)

Question 8

8.

Miles invested $2,400 into a retirement account that earns 1.8% interest compounded bimonthly (2x per month).

How many years will it take for the account to reach $5,202.70?