Samantha sold her collection of model cars for $600. She had purchased them for $520 a year earlier. What is her gain in dollars? What is her return on investment? (Round to the nearest whole percent.)

What is the slope of the line that contains the points (-2,1) and (0,-3)

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?

Barrett is comparing the membership fees for two museums.the art museum charges a one-time fee of $8.25 plus $2.25 per month. the science museum charges a one-time fee of $10.75 plus $3.50 per month. how much does barrett save by joining the art museum instead of the science museum?