K = number of carpenters = 10
<span>C = 15,000+50(10)^2 +60x^2 </span>
<span>C = 15,000+5,000+60x^2 </span>
<span>C = 20,000+60x^2 ----- cost function </span>
<span>Marginal cost function = dC/dx = d/dx [60x^2] = 120x </span>
<span>MC = 120x ----- marginal cost function </span>
<span>Average cost function = C(x)/x = 20,000 /x + 60x </span>
<span>AC = 20,000/x + 60x
</span>Marginal cost when x=14 is:
<span>120(14) = 1,680 </span>
<span>Average cost when x=14 is: </span>
<span>20,000/14 + 60(14) = 2268.57
</span>
<span>Marginal cost is less than the average cost, so the average cost is decreasing as the number of electricians increases.</span>
50*40*45 = 9000 cm (90 m)
Answer:
y= -1x+ 7
Step-by-step explanation:
x in a equation is slope and the other number is y- intercept
Answer:
y=x-5
Step-by-step explanation:
the slope is one
So to find the y intersect you need to plug in the numbers given, like this:
-2=3 + b
subtract the three
-5=b
the y intercept is -5
y=x-5