The diameter of a circle is 8 meters what is the area?

With #! i’ve tried to figure it out but i can’t.

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 are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2