The future value of $3000 invested for 2 years at rate r, compounded annually, is given by S= 3000(1+r)². find the rate that gives a future value from $4320 to 5880, inclusive a) the solution are the values of r in the interval :
(type your answer in interval notation)

b) the solution(s) is/ are r =
(use a comma to separate answers as needed)