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7th Grade Math · Question of the Day

7th Grade Math Question of the Day

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Friday, October 23, 2026

The cost CC of renting a bike for hh hours is given by C=h+15C = h + 15. A customer pays $22 for a rental. What does the equation tell us about the rental structure?

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Question of the Day

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The cost CC of renting a bike for hh hours is given by C=h+15C = h + 15. A customer pays $22 for a rental. What does the equation tell us about the rental structure?

  1. There is a $15 hourly rate and the customer rented for 7 hours total
  2. There is a $15 base fee and the customer rented for 7 hours total
  3. There is a $7 base fee and the customer rented for 15 hours total
  4. There is a $1 hourly rate, $15 base fee, and 7 hours of rental time (correct answer)

Explanation: In y = x + b form, the coefficient of x is 1 (hourly rate = $1) and b = 15 (base fee = $15). Since 22 = h + 15, then h = 7 hours. Choice A confuses the base fee with hourly rate, B doesn't recognize the $1/hour rate, and C switches the values incorrectly.