Question 1119616
5200(1+.035/12)^3, where (1+(r/n))^nt, and t is 1/4 (of a year) and r the rate divided by 12, the number of months.
rounding only at the end, 
a) $5245.63
b) Here it is 5200(1+(.035/12))^156, the number of months in 13 years
=$8190.68