I need helppp please

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

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?