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Royal Bank issued a loan of $90,000 at 6.94% compounded semi-annually. The loan was repaid by payments of $3,350 at the end of every quarter. a. How many payments were required to pay off the loan? (Enter a whole number) b. What was the total principal repaid in the 5 th year? (Enter starting and ending periods as P1 and P2 and the total principal repaid as a positive value to the nearest cent.) P1=P2= Total principal repaid in the 5 th year =$ c. What was the size of the final payment? (Enter a positive value to the nearest cent)