Phil is going rollerblading. The cost to rent rollerblades for x hours at Roller Central is f(x) = 5x + 10. The cost to rent rollerblades at Skate World is f(x) = 6x + 5. If Phill skates for 4 hours, which location is the best to go to? What is the difference in price?

Answer:Step-by-step explanation: