Consider the linear function f (x) = 2x + 1. Describe two real-world situations that you can model using this function.

A babysitter charges $2 per hour and an extra $1 for working after 6 pm.

the total cost (c) of hiring the babysitter for x hours after 6 pm = (cost per hour * number of hours x) + extra cost for after 6 pm

c = 2x + 1

c = f (x) = 2x + 1

A garage charges $2 per minute for a car wash plus $1 for the supplies.

total cost of a car wash for x minutes = cost of car wash * number of minutes + cost of supplies

c = 2x + 1

c = f (x) = 2x + 1

The cost of renting a bicycle is $2 per hour. The person renting the bicycle also needs to pay a service fee of $1.

the total cost (c) of renting the bicycle for x hours = rent per hour * x + service fee

c = 2x + 1

c = f (x) = 2x + 1