Kathy Is 12 years old and Ben is 16 years old. How many years ago was Ben three times Older than Kathy?

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?

How is the number of vertices for a prism related to the name of the prism

If bradley saves for 4 weeks, what is the total amount of money he will have saved?