R(x)=f(x)+g(x) where f(x) = 3/x^2+3x-54 and g(x) 3x+2/x^2+x-72

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts

Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation,and the determine the cost if he drove it70 miles.b) what would be the cost of a car rental if the car was driven 250 miles? show work