Consider the cost function C(x) = 7x² + 14x + 25 (thousand dollars). a) What is the marginal cost at production level x = 5?
b) Use the marginal cost at x = 5 to estimate the cost of producing 5.25 units.

for this case we have that by definition, the volume of a cylinder is given by:

where:

r: it's the radio

h: it's the height

we have as data that:

substituting:

so, the cylinder volume is

option d

step-by-step explanation:

-x represents miles per gallon

-y represents cargo weight

-vehicle traveled an average of 5.3 miles per gallon(x1) with load of 22 tons (y1)

- vehicle traveled an average of 6.3 miles per gallon( x2) with load of 18 tons( y2)

so, equation now becomes

so, option a) is correct