Which equation represents the sum of eight times a number and seven is twice the number

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

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

What is the value of f(x) = 2.2 for f(-2)?