6. The store paid $2.50 for a book and sold it for $5.25. What is the profit as a percent?

Harry’s soccer team plays 2 nonconference games for every 3 games that they play against conference opponents. if y represents the number of nonconference games and x represents the number of conference games, which equation best models this proportional relationship? a)y=2/3 x b)y=3/2 x c)y = 2x d)y = 6x

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.