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25 August, 12:57

Janis uses the equation C = 4h + 8 to find the total cost, C, in dollars, of renting a bike for h hours. If Janis does not spend more than $60, what is the maximum number of hours she can rent the bike?

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Answers (2)
  1. 25 August, 13:19
    0
    Answer: she can rent the bike for a maximum of 13 hours.

    Step-by-step explanation:

    Let h represent the number of hours for which she rents the bike.

    The equation used by Janis to find the total cost, C, in dollars, of renting a bike for h hours is expressed as

    C = 4h + 8

    If Janis does not spend more than $60, then it means that

    4h + 8 ≤ 60

    4h ≤ 60 - 8

    4h ≤ 52

    h ≤ 52/4

    h ≤ 13

    Therefore, the maximum number of hours for which she can rent the bike is 13.
  2. 25 August, 16:28
    0
    Janis could rent the bike for 13 hours.

    Step-by-step explanation:

    Given the equation C = 4h + 8, and the information that Janis will NOT spend more than $60 we can say that:

    Step 1

    We will substitute the C for the maximum amount of money she will spend ($60)

    So the equation will be: 60 = 4h + 8

    Step 2

    We need to isolate the variable by subtracting 8 to both sides of the equation to maintain the equality. We subtract because the equation is adding.

    60 - 8 = 4h + 8 - 8

    Therefor: 52 = 4h

    Step 3

    For the final step, we need to isolate the variable h, but this time, because the variable is being multiply by the 4, we need to divide by 4 on each side of the equation:

    52 / 4 = 4h / 4

    So 13 = h, or h = 13
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