Question

Determine an expression for the cost

Answer 1

350/n

To graph, make an X,Y table, then plug in numbers for n. Do about 5 points.

Answer 2

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

Answer 3

Sorry , I don't know much about the types of function :(

Answer 4

then , you just need to multiply 350 by the number of buses to get the cost. Hmm.. do you understand how it comes?

Answer 5

@kk1022 i dont do those stuffs

Answer 6

1st one

Answer 7

What do you think? Tell me your guess with explanation first ...

Answer 8

@kk1022 my dear frnd i aam that person who posted the answer!

Answer 9

Hmm back to the question, can you tell me your guess first?

Answer 10

alright

Answer 11

i remember u posted in yahooans..

Answer 12

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.

Answer 13

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

Answer 14

we can write it fancier if need be, but that is the idea right?

Answer 15

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.

Answer 16

you can just write it as a piecewise function i guess, make up your own formula

Answer 17

why not, but maybe need ceiling for your set up

Answer 18

\[C(n)=350\lceil\frac{n}{60}\rceil\]

Answer 19

no idea
http://www.wolframalpha.com/input/?i=350+*+ceiling+%28n%2F60%29

Answer 20

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