The basic equation for calculating compound interest is a=p(1+r/n)^(nt). if 1400 is inve if 1400 is inverested at an interest rate of 6% per year, compounded quarterly, how much will the investment be worth at the end of 10 years?

Which function has an inverse that is also a function? a.{(-4,3), (-2, 7), (-1,0), (4, -3), (11, -7)} b.{(-4, 6), (-2, 2), (-1, 6), (4,2), (11, 2)} c.{(-4,5), (-2, 9), (-1,8), (4, 8), (11,4)} d.{(-4,4), (-2, -1), (-1,0), (4, 1), (11, 1)}