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- 1. Multiple ChoiceA tub has 40 gallons of water in it and starts draining at a rate of 6 gallons per minute. Write a formula for the amount of water left in the tub.y = 6x + 40y = -6x + 40y = 6x - 40y = 40x - 6
- 2. Multiple ChoiceA mechanic charges a flat fee of $15 and then charges $65 per hour. Write a formula for the total cost of hiring the mechanic.y = 15x + 65y = 65x + 15
- 3. Multiple ChoiceA candle is originally 12 inches tall and burns a constant rate of 2 inches per hour. Write a formula for the height of the candle remaining.y = 2x + 12y = -2x + 12y = 12x - 2y = 12x + 2
- 4. Multiple Choice
To prepare for a recent road trip, Jill filled up her 19-gallon tank. She estimates that her SUV will use about three gallons per hour. Write an equation to model the amount of gasoline, G, remaining in her tank after t hours.
G=19 – 3t
G=19 + 3t
G=3 - 19t
G=3 + 19t
- 5. Multiple ChoiceCharlie rented a moving truck. He paid a daily fee plus a per-mile fee to rent the truck. The equation below represents the daily amount Charlie paid for the truck if he drives it x miles.
y=0.5x+10
What does the slope of the graph of this equation represent?The daily fee for the moving truckThe per-mile fee for the moving truckHow much Charlie paid for the truckThe number of miles he drove - 6. Multiple ChoiceRich is a member of a gym. He pays a monthly fee plus a per-visit fee. The equation below represents the monthly amount Rich pays for his membership to the gym per month for x visits.
y=3x+10
What does the y-intercept of the graph of this equation represent?The monthly feeHow much Rich pays per visitThe number of times Rich goes to the gymThe total cost at the end of the month - 7. Multiple Choice
Bob's Plumbing charges $25 per hour plus a service fee of $40 for coming out to your house. Which equation models this situation?
y = 25x + 40
y = 40x + 25
y = 25x
y = 25x - 40
- 8. Multiple Choice
Eddie's Electric charges $90 per hour plus a $50 traveling fee. Which equation models this scenario?
y = -50x + 90
y = 90x + 50
y = -90 - 50x
y = 50 - 90x
- 9. Multiple Choice
Amelia has $100 in her savings account and plans on saving $20 per week. Write an equation to represent this situation.
y = 100x
y = 20x
y = 20x + 100
y = 100x + 20
- 10. Multiple Choice
A plant is 5cm tall and growing at a rate of 3cm a month.
y = 5 - 3x
y = 5x + 3
y = 3x +5
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