Write to different expressions that are equivalent to 12-16 x. Use factoring to write one of the expressions

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

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Which inequality has a dashed boundary line when graphed ?