Sarah’s new computer screen is 21 inches wide and the diagonal is 29 inches long. what is the height of the screen?
a.15 in
b.18 in.
c.20 in.
d.28 in.

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?

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Average acceleration: i have no idea how to do this.