9. a company’s marginal cost function is where x is the number of units. find the total cost of producing units 144 to 625.

total cost is $2444

Step-by-step explanation:

A company’s marginal cost function is where x is the number of units

Marginal cost function is the derivative of cost function

to find the total cost of producing units , take integral of marginal cost function

with intervals 144 to 625

now plug in the values

total cost is $2444

- 2 + 10x³ - 21x² + 19x - 4

step-by-step explanation:

each term in the second factor is multiplied by each term in the first factor

x²(- 2x² + 4x - 1) - 3x(- 2x² + 4x - 1) + 4(- 2x² + 4x - 1) ← distribute

= - 2 + 4x³ - x² + 6x³ - 12x² + 3x -8x² + 16x - 4

collect like terms

= - 2 + 10x³ - 21x² + 19x - 4 ← in standard form

its definatley   this on your answer choice?