Linear Models

Which statement below accurately represents the graph?

• $100 is earned for each hour worked

• $100 is earned for every 2 hours worked

• $500 is earned for every 8 hours worked

• $400 is earned for every 6 hours worked

The amount of water in the bucket ( in pints) can be modeled by the equation V(n) = 2n + 7 where n is the number of pitchers used to put water in the bucket.  If the bucket contains 29 pints of water, how many pitchers of water were used to fill it?

• 11

• 65

• 9

• 18

A driving range charges $4 to rent a golf club plus $2.75 for every bucket of golf balls you hit. Write an equation that shows the total cost c of hitting b buckets of golf balls.

• c = 2.75b + 4

• c = 2.75b

• c =  4b- 2.75

• c = 2.75b - 4

The function defined by f(n) = 12n + 500
represents the total amount given to charity as a function of the number of students present at the event.
If the school would like to donate $3000 to its favorite charity, how many students will have to attend to make that happen?

• 229

• 219

• 239

• 209

• 64

• 74

• 72

• 95

• 4

• 10.75

• 11.75

• 12.75

• 12

• 13

• 14

• 18

The graph models the value of a machine over a 10-year period. Which equation best represents the relationship between x, the age of the machine in years, and y, the value of the machine in dollars over this 10-year period?

The cost of hiring a private tutor is modeled by the function C(n)=32n+20. How much does the tutor charge per hour?

• $32 per hour

• $20 per hour

• $52 per hour

• $12 per hour

The cost of hiring a private tutor is modeled by the function C(n)=32n+20. What does 20 represent in this model?

• Price per hour

• Flat fee to hire tutor

• Maximum number of hour you can hire the tutor

• I don't know what it means