AlgebraEasy–MediumCost of a hire from a linear model
Algebra practice question
The cost C, in dollars, of hiring a boat for h hours is C = 8h + 20. What is the cost of hiring the boat for 5 hours?
Answer: 60
8(5) + 20 = 60.
Common wrong answers
- If you answered 33
- 33 adds 8, 5, and 20.
- If you answered 40
- 40 forgets the $20.
- If you answered 140
- 140 multiplies 28 by 5.
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