Minute Paper #9: (7.3 & 7.4) BUT which formula to use? I=PRT (4 in 1) S = P(1 + RT) S = P+I P= S (1 + RT) 1What was the original deposit into a bank account if there was $13,446.00 in the account 1.75 years later and the interest rate was 14% ? 2/ An investment of $500,000 matured for $581,000 in 18 months. What was the interest rate associated with the investment? 3/ A loan of $10,000 is taken out at an interest rate of 16% p.a. for 6 months, find the amount (future value) required to pay off the loan including interest. . (email Alar by tonight or private chat me the answers)