Denzel bought 3 sweatshirts for $21.99 each and 2 t-shirts for $18.50 each. how much did he spend?

Apatient is to take 60 mg of an antibiotic on day 1, take 45mg on days 2 and 3, take 30mg on days 4 and 5 and take 15 mg on days 6 and 7. how many total mg will the patient take?

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?