The hair on Jamal’s arms is standing straight up. What most likely explains why his hair is behaving this way?

He is in a cold area.
He is sweating.
He is in danger of bacteria.
He is receiving information for touch.

A

Explanation: Because I said so.

the answer is c) an oak tree

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.