Arace track is in the form of a ring whose inner circumference is 157 m and outer circumference is 314 m. find the area of the track.

Trish receives $450 on the first of each month. josh receives $450 on the last day of each month. both trish and josh will receive payments for next four years. at a discount rate of 9.5 percent, what is the difference in the present value of these two sets of payments?

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount

(-y to the power of 2 - 4y- to the power of 2 -6 y +3)