math 20 please check
posted by Sandi on .
Jacob is 25 yrs old and hopes to retire by 55. He invests $22,000 in an RRSP that earns a rate of 9.7% per annum, compounded quarterly. What will his investment be at age 55?
A=P(1+i)^n
2200(1+.097/4)^120
=$390067
to get the 120 I did 5525=30 then * by 4 cause its compounded quarterly. But answer seems so high I'm questioning myself.

You are correct!
I got $390 067.17, the same as your answer.
You are looking at the power of compound interest.