Evaluating Real-Life Linear Functions in Everyday Scenarios

A taxi charges a base fare of $3 plus $2 for each mile driven. Write a linear function to represent the total fare, and evaluate it for a 5-mile trip.

• $15

• $10

• $20

• $13

A gym charges a monthly membership fee of $30 plus $10 for each class attended. Write the linear function for the total cost and evaluate it for attending 4 classes.

• $70

• $90

• $40

• $50

A car rental company charges a flat fee of $50 plus $0.20 per mile driven. Write the function for the total cost and evaluate it for driving 100 miles.

• $100

• 70

• $50

• $90

A phone plan costs $25 per month plus $0.10 for each text message sent. Write the linear function for the total cost and evaluate it for sending 50 messages.

• 25

• 50

• 35

• 30

A bakery sells cupcakes for $2 each and charges a $5 box fee. Write the linear function for the total cost of cupcakes and evaluate it for buying 12 cupcakes.

• $25

• $32

• $20

• $29

A concert ticket costs $45 plus a $5 service fee. Write the linear function for the total cost of tickets and evaluate it for buying 3 tickets.

• $120

• $150

• $160

• $135

A subscription service charges $15 per month plus $5 for each additional movie rented. Write the function for the total cost and evaluate it for renting 6 movies.

• 50

• 30

• 40

• 25

A landscaping service charges a flat fee of $100 plus $25 for each hour of work. Write the linear function for the total cost and evaluate it for 3 hours of work.

• 125

• 150

• 175

• 200

A school charges $200 for a field trip plus $10 for each student attending. Write the linear function for the total cost and evaluate it for 15 students.

• 250

• 400

• 300

• 350

A delivery service charges a $10 fee plus $1.50 per mile. Write the linear function for the total delivery cost and evaluate it for a delivery of 8 miles.

• 22

• $15

• $18

• $30