Can someone PLZ help

Write each expression in exponential form and find its value. 2 x 2 x 2 x 2

Me. drysdale earned 906.25 in interest in one year on money that he had deposited in his local bank if the bank paid an interest rate of 6.25% how much money did mr. drysdale deposit

What are the possible rational zeros of [tex]f(x) = x^4+2x^3-3x^2-4x+18[/tex]