The average cost when producing x items is found by dividing the cost function, c(x), by the number of items, x. when is the average cost less than 100, given the cost function is c(x) = 10x + 360?

a.) (0,4)
b.) (-infinity, 0) u (4, infinity)
c.) (4, infinity)
d.) (-infinity, 0] u [4, infinity)

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4

-9

step-by-step explanation:

6

step-by-step explanation: