Crasher rented a quad runner for his summer vacation. The total cost (c) of renting the quad for n days is c=150+80n. If he paid $1030 to rent the quad runner, how many days was it rented?
1030 = 150 + 80n Subtract 150 from both sides. 880 = 80n Divide both sides by 80. n = 11 11 days