How do i solve this ?? please explain it to me

How do i work this problem out using the equation a=pe^rt

Beth took out a $20,000 loan for college she is borrowing money from two banks. bank a charges an interest rate of 8.5% bank b charges and interest rate of 10.5% after one year alice owes $1860 in interest how much money did she borrow from bank a

What term best describes a line and a point that lie in the same plane? a. congruent b. coplanar c. collinear d. equal