anonymous
  • anonymous
The cost in dollars, C(d), to rent a houseboat during July to August from a certain company is given by C(d) = 120d + 100, where d is the number of rental days. a) Why does the 100 represent the fixed cost and the independent variable of the number of days? b) State the domain and range: Why is the domain: 0 ≤ d ≤ 62, range: 100 ≤ C ≤ 7540?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
a) independent means that it will not be changed no matter what, so in every case no matter how many days you rent it. you will always have to add 100 . that is why its independent.
anonymous
  • anonymous
Because when I graphed the function it is no where 62 and 7540. But I do know that from July to Agusut = 62 days and 120(62)+100 = 7540.
anonymous
  • anonymous
ohh, i see.

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anonymous
  • anonymous
july and aug have 31 days each so together its 62 days. so you can rent for a range between 0 adn 62 days.when you plug in those numbers you get the y values
anonymous
  • anonymous
what do you mean when I plug in those numbers?
anonymous
  • anonymous
well in a simple equation we have y=x+.... so the 0 to 62 are the numbers you would put in for the x and finish the equationto find the range of the y.
anonymous
  • anonymous
i still don't get it :(
anonymous
  • anonymous
in your equation:C(d) = 120d + 100, the d is the"x" and the C(d) is the y. so when you put in 0 you have C(d)=120*0+100. and you get C(d)=100. then plug in 62 day.: C(d)=120*62+100.cC(d)=7540::) so the smallest amoiunt was 100 and the largest amount was 7540
anonymous
  • anonymous
ohhhh, i see. But how about x?
anonymous
  • anonymous
so x represnts thedays you can rent. as i said before:how many days can someone rent?
anonymous
  • anonymous
62 days so from 0 to 62?
anonymous
  • anonymous
yup
anonymous
  • anonymous
ohh, thank you :)
anonymous
  • anonymous
np

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