Step-by-step explanation:

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Answer:
2929 1/3
in^3
Step-by-step explanation:
The equation for the volume of a sphere is
.
Insert 13 for r. Then, simplify.
Answer:
$4.
Step-by-step explanation:
Let us assume that Pete and Teegan each put an amount of $P in a new bank account.
Teegan's account earns 2.75% simple interest and she earned $2.20 in interest after one year.
So, we can write
⇒ P = $80
Now, this $80 in Pete's account earns 5% simple interest.
Then after one year Pete will earn as interest
Dollars. (Answer)