Please answer the question properly friends I want explanation ok.​

Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Y=21.95x+10 y=22.45x solve by substitution