Gotta finish this math question and a paper tonight, help a fella out?

D'Andre has decided that he needs to get more exercise, so he is building a running regimen for himself. He decides that, beginning on Sunday, he'll run 10 feet. On each subsequent day, he'll double the distance he ran the previous day. So he'll run 20 feet on Monday, 40 feet on Tuesday, and so on. His Track coach (who also happens to be his math teacher) told D'Andre that he won't be able to keep to his plan for very long, but D'Andre is determined to make it work for at least two weeks.

Question

Gotta finish this math question and a paper tonight, help a fella out?

D'Andre has decided that he needs to get more exercise, so he is building a running regimen for himself. He decides that, beginning on Sunday, he'll run 10 feet. On each subsequent day, he'll double the distance he ran the previous day. So he'll run 20 feet on Monday, 40 feet on Tuesday, and so on. His Track coach (who also happens to be his math teacher) told D'Andre that he won't be able to keep to his plan for very long, but D'Andre is determined to make it work for at least two weeks.

alystar · Answer

a. According to his plan, how far will D'Andre have to run on the 14th day? Give your answer to the nearest tenth of a mile (1 mile=5,280 feet).

b. If D'Andre sticks to his plan, how far will he have to run in those 2 weeks? Give your nearest answer to the nearest tenth of a mile.

Show all work.

mathmale · Answer

What kind of sequence do you see here?
What is the first term of the sequence?
What is the common ratio?
What formula predicts the nth term of the sequence?