PLEASE HELP!
i’m doing an exam and i really don’t know how to do this

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.

Calculate the effective quarterly compound interest rate equivalent to a 1% of monthly compound interest rate.