PLEASE HELP QUICK WILLY IVE BRAINLIEST

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.

Plz hurry evaluate the expression a+b where a=8 and b=19

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is