Between which two intergers 17 lie squared

How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

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

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?