What is the system of equations below when graphed y=3x+1 y=4x-1

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

Simplify the given expression leaving the answer in improper fraction form. 2/3+5/6

How do i simply this radical expression?