Posted by Gregg on .
Assume that the mathematical model C(x) = 16x + 130 represents the cost C, in hundreds of dollars, for a certain manufacturer to produce x items. How many items x can be manufactured while keeping costs between $525,000 and $781,000? Thanks for the help in advance! :)

Algebra 
Linell,
Ohhh ,i'm on this chapter right now. Okay, is there a value for x? if not, make an x and y table chart, i normally start with zero which i highly recomend you doing.
okay once you decide on what you are going to set x as, fill it in like this:
Example C(0)= 16(0)+130
C(0)= 0 +130
C(0)= 130
You try it now.
if you have any questions, i'm right here waiting to answer them. 
Algebra 
Brett,
5,250=16x+130
16x=5,250130
16x=5,120
x=5,120/16
x=320
7,810=16x+130
16x=7,810130
16x=7,680
x=7,680/16
x=480
This is what I came up with is this correct? 
Algebra 
Gregg,
I got the same thing. I hope it's right

Algebra 
Linell,
what did you set x as?
oh, i get it , you're trying to do the linear equation type of way, he's talking about linear functions, you know... f(x)=mx+b 
Algebra 
Gregg,
So is {x 320 < x <480 correct?

Algebra 
John,
Where did this question come from?