Shaundra made this graph in order to show the results of a science experiment. She records the changes in height of the plant, in inches, according to amount of fertilizer, in pounds, added to the soil.

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

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