If a student thinks of a number from 1 to 75, what is the probability that the number will be 20, 30, or 40?

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

Ametal rod is 2/5 meters long. it will be cut into pieces that are each 1/30 meters long. how many pieces will be made from the rod?

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation. which method should jeremy use?