The sale price of a trampoline before tax is $300 the sales tax is 4% find the sales tax in the total price of the trampoline.

Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?

Oliver read for 450 minutes this month his goal was to read for 10% more minutes next month if all of her medicine go how many minutes will you read all during the next two months

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.