Help pls

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.

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

What would the rule be for the reflection of y=-3