To rent a car it costs $12 per day and $0.50 per kilometer traveled. If a car were rented for 5 days

To rent a car it costs $12 per day and $0.50 per kilometer traveled. If a car were rented for 5 days and the charge was $110.00, how many kilometers was the car driven?

Using days as d and kilometers as k, we have our cost equation:
Rental Charge = $12d + 0.5k

We're given Rental Charge = 110 and d = 5, so we plug this in:
110 = 12(5) + 0.5k
110 = 60 + 0.5k

Plugging this into our equation calculator, we get:
k = 100