Sabrina is going to rent a bicycle while on vacation. There are two rental companies she can choose from. The first company charges $10 plus a rate of $2 per hour until the bicycle is
returned. The second company's rental charges can be represented by the equation c = 3h + 6
where c represents the rental cost and h represents the number of hours the bicycle is rented.

Which company will charge less if Sabrina rents the bicycle for 5 hours? Why?

a. The first company is cheaper. They will charge $20 for 5 hours.

b. The second company is cheaper. They will charge $21 for 5 hours.

c. The first company is cheaper. They will charge $10 for 5 hours.

d. The second company is cheaper. They will charge $6 for 5 hours.

e. The first company is cheaper. They will charge $12 for 5 hours.

f. The second company is cheaper. They will charge $9 for 5 hours.