Please help this is very easy

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.

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12