Please answer the following question by reasoning step-by-step.
Jenna is on a road trip. She drives for 2 hours at 60mph. She takes a bathroom break, and then she continues driving for 3 hours at 50 mph. She can drive for 30 miles on one gallon of gas. If one gallon of gas costs $2, how much money does she spend on gas for her trip?

18
First she drives 2 hours * 60 mph = 120 miles.

Then she drives 3 hours * 50 mph = 150 miles.

The total miles driven is 120 + 150 = 270 miles.

Jenna uses 270 / 30 = 9 gallons of gas.

The cost of gas is 9 * $2 = $18.

.

Final answer: 18