What is the area of the inside surface of the ball to the nearest cm^2 ?

Y=4x^2+x-1 solve using quadratic formula

Which of these people has balanced their checkbook correctly? oa. gary: the balance in his check register is $500 and the balance in his bank statement is $500. b. gail: the balance in her check register is $400 and the balance in her bank statement is $500. c. gavin: the balance in his check register is $500 and the balance in his bank statement is $510.

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