An internet service provider charges $9.95/month for the first 20 hours and $0.50 for each additional hour. write an expression representing the charges for h hours of use in one month when h is more than 20 hours. what is the charge for 35 hours?

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

How many solutions does the nonlinear system of equations graphed below have?

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics