How to show work for this problem 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.

If value of cos330° is √3/2 then find tan165°.

Using elimination, what is -4x+2y=-12 4x+8y=-24