Lillie manson paid for tuition at a summer school with an installment loan of $3,600 at 9% interest for 12 months. her monthly payment was $314.83. after 6 payments, the balance was $1,840.34. she paid off the loan with the next payment. what did she save by paying off the loan early?

(hint: first calculate the payoff: find the interest on the balance due and add it to the balance due. add the amount of the first six payments to the payoff in month 7. compare this total to the monthly payment multiplied by 12.)

The height of a birch tree, f(x), in inches, after x months is shown in the graph below. how much does the birch tree grow per month, and what will be the height of the birch tree after 10 months? a. the birch tree grows 1 inch per month. the height of the birch tree will be 16 inches after 10 months. b. the birch tree grows 2 inches per month. the height of the birch tree will be 26 inches after 10 months. c. the birch tree grows 3 inches per month. the height of the birch tree will be 36 inches after 10 months. d. the birch tree grows 2 inches per month. the height of the birch tree will be 24 inches after 10 months.