April took out a $600 loan from the bank. At the end of 5 years, she pays back the principal, plus $60 simple interest. What was the annual interest rate?

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?