1. A loan of $1980 can be repaid in 130 days by paying the principal sum borrowed plus $55 interest. What was the rate of interest charged? The simple interest rate is '?%. (Round the final answer to two decimal places as needed. Round all intermediate values to six decimal places as needed.) 2. Mac's credit card statement included $1388.00 in cash advances and $89.35 in interest charges. The simple interest rate on the statement was 9%% pa. For how many days was Mac charged interest? The number of days required is ? (Round up the nal answer to the nearest day as needed. Round all intermediate values to six decimal places as needed.) 3. If $680 is worth $698.70 after three months, what interest rate was charged? The simple interest rate was ?%. (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) 4. In how many months will $2500 earn $51.04 interest at simple interest rate of 3.5%? The number of months is ? (Round the final answer to the nearest month as needed. Rcund all intermediate values to six decimal places as needed.) 5. What principal will have a future value of$1549.50 mtg interest rate of 4.4% in nine months? The principal is $? (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) 6. The lawyer for a credit union member has sent a cheque for $2580.51 in full settlement of the member's loan balance including simple interest at 3%% for 5 months. How much of the payment is interest? The amount of the payment that is interest is $?I (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) 7. What amount of money will accumulate to $1516.80 in eight months W interest rate of 8%? The amount of money is $? (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)