could you provide the excel formula used to get the answer please. thank you in advance!

Richard McLean wants to invest $3,000 in an account paying 5.25 percent compounded quarterly. What is the interest on interest after four years? A. $695.98 PV B. $65.98 C. $630.00 D. $157.50 E. none of the above Gertrude Carter and Co. has an outstanding loan that calls for equal annual payments of $14,903 over the 10 -year life of the loan. The original loan amount was $100,000 at an APR of 8 percent. How much of the third payment is interest? A. $6,130.42 B. $6,207.21 C. $6,851.34 D. $7,447.76 E. $8,051.66 The Idealistic Insurance Company offers a perpetuity which pays annual payments of $20,000. This contract sells for $250,000 today. What is the interest rate? A. 8.00 percent PV B. 9.60 percent NPER C. 10.03 percent RATE D. 11.35 percent E. 11.48 percent