Which graph shows a set of ordered pairs that represents a function?

If f(x) = 3-2x and g(x) =1/x+5 to what is the value (f/g)(8)

How to solve a simultaneous equation involved with fractions?

You went to a restaurant and spent $53.25 on the meal. there was a 6% sales tax. what was the amount of money, not including a tip, you spent at the restaurant?