Question

The manager of a furniture factory finds that it costs $2400 to manufacture 90 chairs in one day and $4800 to produce 290 chairs in one day.
(a) Express the cost C (in dollars) as a function of the number of chairs x produced, assuming that it is linear.

Answer 1

x is chairs and y is dollars

first, find the slope of this function

2400-4800
-----------
90-290

= 12

so the slope is 12

plug in the point (90, 2400) into y-y=m(x-x)

y-2400=12(x-90)
y-2400=12x-1080
y=12x+1320

i THINK that's right...

Answer 2

wow you made it seem so simple, thanks

Answer 3

haha no prob
thanks for the metal (;