Algebra 1 / LINEAR EQUATIONS AND GRAPHS

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

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Find the solution(s) to x^2-14+49=0