(10 points) (a) A $420 loan is taken out with a 4% simple annual interest rate for 12 years. Interest owed at the end of the loan 5. Total amount to repay atter 12 years: 5 (b) Theo invested $9600 in a savings bond When it matured after 11 years. Theo cashed out the bond and received a total of 512504 The simple annual interest rate for Theo's dona (round to 2 decimal places) (C) Roxy borrowed money from her aunt 8 years ago. They agreed to a simple annual interest rate of the loan and she has determined that she owes a total of $1211 to her aunt on the loan Roxy is ready to pay back The amount Roxy originally borrowed (round to the nearest dollar) The total amount of interest that Roxy aunt eams on the loan $ (a) A S1160 deposit was made in an account that pays 975 single annuai interest. If the account was closed today, the total amount in the account would be 52088 How long ago was the deposit made into the account. {round 10 2 decimal places Years