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The total cost function for a product is

C(x) = 875 ln(x + 10) + 1900
where x is the number of units produced.
(a) Find the total cost of producing 200 units. (Round your answer to the nearest cent.) ___$
(b) Producing how many units will give total costs of $9500? (Round your answer to the nearest whole number.) ___ units

User Dave Jones
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1 Answer

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Final answer:

The total cost of producing 200 units is approximately $5,231.50. The number of units that will result in total costs of $9,500 is approximately 6216 units.

Step-by-step explanation:

To find the total cost of producing 200 units, we need to substitute x = 200 into the total cost function C(x).

Plugging in the value, we have:

C(200) = 875 ln(200 + 10) + 1900

Using a calculator, we can evaluate the natural logarithm to get:

C(200) ≈ 875 ln(210) + 1900

Finally, we can calculate the total cost by evaluating the expression:

C(200) ≈ 875(5.34) + 1900 ≈ $5,231.50

Therefore, the total cost of producing 200 units is approximately $5,231.50.

To determine the number of units that will result in total costs of $9,500, we need to solve the equation C(x) = 9500 for x. Rearranging the equation, we have:

875 ln(x + 10) + 1900 = 9500

Subtracting 1900 from both sides:

875 ln(x + 10) = 7600

Dividing both sides by 875:

ln(x + 10) = 8.6857

Taking the natural logarithm of both sides gives:

x + 10 = e^8.6857

Subtracting 10 from both sides:

x = e^8.6857 - 10

Using a calculator, we can compute:

x ≈ 6225.74 - 10 ≈ 6215.74

Rounding to the nearest whole number, the number of units that will result in total costs of $9500 is approximately 6216 units.

User Georg Heiler
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