Help asap! Will give brainliest! question is in the pic

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

At the beginning of year 1, carlos invests $600 at an annual compound interest rate of 4%. he makes no deposits to or withdrawals from the account. which explicit formula can be used to find the account's balance at the beginning of year 5? what is, the balance?

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?