anonymous
  • anonymous
Determine an expression for the cost
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
350/n To graph, make an X,Y table, then plug in numbers for n. Do about 5 points.
Callisto
  • Callisto
let n be the number of students no. of cars needed = n/60 ( round up the number) cost = 350 x no of car needed = 350 x n/60 = 35n/6
Callisto
  • Callisto
Sorry , I don't know much about the types of function :(

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Callisto
  • Callisto
then , you just need to multiply 350 by the number of buses to get the cost. Hmm.. do you understand how it comes?
anonymous
  • anonymous
@kk1022 i dont do those stuffs
anonymous
  • anonymous
1st one
Callisto
  • Callisto
What do you think? Tell me your guess with explanation first ...
anonymous
  • anonymous
@kk1022 my dear frnd i aam that person who posted the answer!
Callisto
  • Callisto
Hmm back to the question, can you tell me your guess first?
anonymous
  • anonymous
alright
anonymous
  • anonymous
i remember u posted in yahooans..
Callisto
  • Callisto
Hmm, I'm not sure about your explanation. Personally, i also think that the first one gives more info. That is because you can deduce the number of bus you rent as well as finding the total cost. However, for the second one, you can only find the number of buses and the total cost, but not the number of students present.
anonymous
  • anonymous
if n is the number of students, then you have a piecewise function that will look something like this for \[1\leq n\leq 60, C=350\] \[61\leq n \leq 120, C=700\] etc
anonymous
  • anonymous
we can write it fancier if need be, but that is the idea right?
Callisto
  • Callisto
For example, when i tell you there are 72 students, you can know that you need 2 buses, and the cost is 350x2 = 700 but when i tell you there is 2 buses, you don't know exactly how many students are there.
anonymous
  • anonymous
you can just write it as a piecewise function i guess, make up your own formula
anonymous
  • anonymous
why not, but maybe need ceiling for your set up
anonymous
  • anonymous
\[C(n)=350\lceil\frac{n}{60}\rceil\]
anonymous
  • anonymous
no idea http://www.wolframalpha.com/input/?i=350+*+ceiling+%28n%2F60%29
anonymous
  • anonymous
copy the one i pasted, but basically it looks just like \[y=\lceil x \rceil\] but with interval on the x axis from 0 to 60 instead of 0 to 1 and on the y axis go up in units of 350 instead of 1

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