Algebra
posted by Alexius on .
jake goes to the grocery store and buys 3 apples. 2 cans of soup, and 1 box of cereal. the apples cost $0.89 each; the soup costs $2.98 per can; and the box of cereal $4.99. write an equation that represents the total cost c of jake's purchases.

3(0.89) + 2(2.98) + 4.99 = c

mr.thomas wants to buy a boat. he must make 548 monthly payments to pay back the amount he borrowed, plus interest. his monthly payment is $161.85. what other information is necessary to determine the amount of money mr.thomas borrowed from the bank.

What is the interest rate?
Tell Mr. Thomas it's ridiculous to take over 45 years to pay off this boat.