Write an equation for all of these: 1. six more than the total of n and two. 2. four increased by three times a number. 3. the half of the product of x and y.

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.