Slope =4 passing through (4,3)

The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.

What is the perimeter of an equilateral triangle if each side is (x+3)?

Hi i’m not sure how to do question 20 if u could explain how to do it that’d b great