Original price of a bicycle $1,600.00 Discount 35.3% Tax 1%? Find the selling price of each item ??? please hel itsdue todayyy please help

Find the value of the cosine for angle a

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?

How do i do this activity, is appreciated