Question

A textbook company keeps track of its daily cost for printing whole textbooks to different schools but can only print up to 500 books a day. The daily cost (C) to print x number of textbooks is given by C(x) = 3.50x + 1200.

Using the function, determine one possible daily cost by evaluating the function for any input of your choice.
For what value of x does C(x) = 1900?
Interpret the statement C(20) = 1270.
Interpret the statement C(w) = p.
Explain whether C(40.5) = 1341.75 is correct and possible given the context of this problem.

Answer 1

@3mar

Answer 2

@CamPayne

Answer 3

Well,
The daily cost (C) to print x number of textbooks is given by :

C(x) = 3.50x + 1200
1. C(x) = 1900 gives :
C(x) = (7/2)x + 1200 = 1900
therefore :
(7/2)x = = 1900 - 1200 = 700
finally :
x = 2 . 700/7 = 200 books

2. C(20) = 1270
well, with the given function, first let's procced to the verification of the statement ... :
c(20) = (7/2) . 20 + 1200 = 70 + 1200 = 1270 ---> OK
means : the cost for printing 20 books is : $1270

3. Explain whether C(40.5) = 1341.75 is correct and possible given the context of this problem.
same procedure : verify the statement ...
40.5 = 91/2 and
C(40.5) = (7/2) . 91/2) + 1200 = 159.25 + 1200 = 1359.25
so
C(40.5) = 1359.25 -----> the given cost $1341.75 is not correct

Answer 4

Sorry I was on other question!

Answer 5

im confused

Answer 6

@3mar

Answer 7

Well, I am here.

Answer 8

how does he get 7/2

Answer 9

where?

Answer 10

3.5=7/2
Done!

Answer 11

oooo

Answer 12

It happens to all of us!

Answer 13

how does x = 2?

Answer 14

C(x) = 3.50x + 1200
1. C(x) = 1900 gives :
C(x) = (7/2)x + 1200 = 1900
therefore :
(7/2)x = = 1900 - 1200 = 700
finally :
x = 2 . 700/7 = 200 books

Answer 15

x doe not equal to 2
x is equal to 2×700÷7

Done!

Answer 16

got it?
\[x=\frac{ 2*700 }{ 7 }=200\]

Answer 17

oh because the way he wrote it didn't make sense thanks

Answer 18

Yes.

Answer 19

* . × all with the same meaning!

Answer 20

i know

Answer 21

Good!

Answer 22

Any more questions?

Answer 23

you guys can go help other people ill tag you if i need your help

Answer 24

Thank you for the medal!

Answer 25

c(20) = (7/2) . 20 + 1200 = 70 + 1200 = 1270 ---> OK
means : the cost for printing 20 books is : $1270