Write Equations in Two Variables A-CED.2
  • 1. Mike is buying a large pizza. The pizza cost $8.00 plus .50 for each additional topping. Which function correctly models this situation?
A) y = 8x - 0.50
B) y = 8.50x
C) y = 8x + 0.50
D) y =0.50x + 8
  • 2. Bob the plumber charges $15 per hour plus a service fee of $40 for coming out to your house. Which function models this situation?
A) y = 15x - 40
B) y = 40x + 15
C) y = 15x + 40
D) y = 15x
  • 3. Bob the plumber charges $15 per hour plus a service fee of $40 for coming out to your house. How much would plumber Bob charge for working 5 hours?
A) $125
B) $115
C) $100
D) $75
  • 4. Valerie is traveling at a rate of 65miles per hour. Which function would be used to model the situation?
A) y = 65
B) y = 65x
C) y = x
D) y = x + 65
  • 5. Thomas got a speeding ticket. The cop said he had to pay $10 for each mile per hour he was going over the speed limit. Plus Thomas has to pay $115 court cost. Which equation correctly models what Thomas would have to pay?
A) y = 125x
B) y = 10x - 115
C) y = 10x + 115
D) y = 115x + 10
  • 6. A business purchases a computer for $1500. The computer goes down in value $200 each year when the new model is released. Write a function to model the situation.
A) y = 1500x - 200
B) y = 200x - 1500
C) y = -200x + 1500
D) y = 200x + 1500
  • 7. A business purchases a computer for $1500. The computer goes down in value $200 each year when the new model is released. How much is the computer worth after 4 years?
A) $1300
B) $0
C) $150
D) $700
  • 8. There were approximately 11,000 students enrolled at Western Carolina last year. If this figure goes up by about 225 students each year, how many years will it take the enrollment to reach 20,000 students?
A) 1 year
B) 15500 years
C) 40 years
D) 20 years
  • 9. Ted's Taxi service charges a $5 pick up fee plus $2 per mile. Which function describes the situation?
A) y = 5x - 2
B) y = 2x - 5
C) y = 5x + 2
D) y = 2x + 5
  • 10. Ted's Taxi service charges a $5 pick up fee plus $2 per mile. What is the initial value?
A) $0
B) $2
C) $5
D) $7
  • 11. Kadi is starting a kayak rental company. She is going to charge $20 to rent the kayak plus $5 per hour of rental. What is the slope and what does it represent?
A) slope=20 It represents the charge per hour
B) slope=20 It represents the starting cost.
C) slope=5 It represents the initial cost of the kayak
D) slope=5 It represents the charge per hour
  • 12. Alan buys a new car for $25,000. It depreciates at a rate of $2000 per year. Which function would I use the find the value after x years?
A) y = 2000x - 25000
B) y = -2000x + 25000
C) y = 25000 - x
D) y = 25000x - 2000
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