Find equation for question number 4 , 5 and 6

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.

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?