what is the amount of the investment

1300 at 4% compounded quarterly for 6 years

Pt = Po(1+r)^n,

r APR / 4 = 4% / 4 = 1% = 0.01 = QPR =
Ouarterly percentage rate.

n=4 comp/yr * 6yrs = 24 comp. periods.

Pt = 1300(1.01)^24 = $1650.66.