Simplify (1 − cos x)(1 + cos x)

Ben bowled 124 and 188 in his first two games. what must he bowl in his third game to have an average of at least 160?

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Me. drysdale earned 906.25 in interest in one year on money that he had deposited in his local bank if the bank paid an interest rate of 6.25% how much money did mr. drysdale deposit