Question 44693
Given C(x) = mx + b, we merely plug in for the fixed cost (b = $40) and the incremental cost (m = $10)...we get
C(x) = 10x + 40
We know this is correct because if x = 0, that is no items produced, our fixed cost would still be $40...
To graph this, plot the point (0, 40), becaise when x = 0, C(x) = 40...
Then let x = 1...C(x) = 10(1) + 40 = 50...thus graph the point (1, 50)...
Connect the dots in a line and you're done...