algebra

your local rollerblade rink will rent you blades for $14.00 for 3 hours or $29.00 for 8 hours. Asume the price increase is constant depending on the number of hours the blades are rented.

Find the expression

  1. 👍
  2. 👎
  3. 👁
  1. x = hours
    y = price
    two points (3,14) and (8,29)
    y = m x + b

    m = (29-14)/(8-3) = 15/5 = 5

    y = 5 x + b
    14 = 5(3) + b
    b = -1
    so
    y = 5 x - 1

    1. 👍
    2. 👎
  2. hey damon..thank you for your answer but would 15/5=3...so where would the 3 go...thank you

    1. 👍
    2. 👎
  3. whoops, sorry
    m = (29-14)/(8-3) = 15/5 = 3

    y = 3 x + b
    14 = 3(3) + b
    b = 5
    so
    y = 3 x +5

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. math check answers

    For questions 3 and 4, you will be answering by filling in the blank. Please be aware that your answer must include any commas or decimals in their proper places in order to be correct. The dollar signs have been provided. For

  2. math

    A rectangular skating rink measuring 30m by 20m is doubled in area by adding a strip at one end of the rink and a strip fo the same width along one side of the rink. Find the width of the strips if the enlarged rink is still

  3. Physics

    The blades in a blender rotate at a rate of 6500 rpm. When the motor is turned off during operation, the blades slow to rest in 2.6 s. 1. What is the angular acceleration as the blades slow down?

  4. statistics

    David wants to rent an unfurnished apartment for next semester. He took a random sample of 9 apartments adversised in the local Halifax paper, and recorded the rental rates. The rents (in $ per month) were: 500 650 600 505 450 550

  1. Math

    A circular ice rink is being built in town. Around the ice rink, a walkway will be built. The ice rink will have a diameter of 8080 feet and the walkway will be 1010 feet wide. What is the approximate area of the walkway? A. 314

  2. algebra

    At the Wild Thing Zoo, you can rent a motorized cart to tour the grounds for a $4 initial charge and $4 per hour. An equation that represents the total cost y for x hours is y = 4 + 4x. At Safari Zoo, you can rent the same cart

  3. stats

    Jason, a freshman at a local college, just completed 15 credit hours. His grade report is presented below. Course: Calculus, Biology, English, Music, P.E. Credit Hours 5, 4, 3, 2, 1 Grades C, A, D, B, A The local university uses a

  4. Math

    Need help on this one.... Your town is building a circular ice rink with a diameter of 100 feet. Around the ice rink will be a walkway that is 10 feet wide. What is the approximate area of the walkway? Thanks...

  1. algerbra

    Melanie wants to rent a bike on her vacation for less than $50. At Mike's Bike Shop, she can rent a bike for $8 per hour plus a $6 flat fee. Any portion of an hour is charged as a full hour. The inequality that represents this

  2. Stats

    You want to rent an unfurnished one-bedroom apartment in Boston next year. The mean monthly rent for a random sample of 14 apartments advertised in the local newspaper is $1200. Assume that the standard deviation is $230. Find a

  3. math

    2. Each blade on a windmill is in the shape of a triangle with a base of 7 feet and a height of 4 feet. If there are four blades on the windmill, what is the total area of the blades? A.56ft2***** B.14ft2 C.28ft2 C.96ft2

  4. physics please help me

    A ceiling fan is turned on and a net torque of 1.6 N·m is applied to the blades. The blades have a total moment of inertia of 0.25 kg·m2. What is the angular acceleration of the blades?

You can view more similar questions or ask a new question.