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PROBLEM

A clock business has fixed costs of $7000. Find the average cost per clock for x=100,1000,10,000x=100, 1000, 10,000: 0.4x+7000x\frac{0.4x + 7000}{x}.

STEP 1

Assumptions1. The weekly fixed costs are 7000.Theaveragecostperclockforthebusinesstomanufacture7000. The average cost per clock for the business to manufacture xclocksisdescribedbythefunction clocks is described by the function \frac{0.4x +7000}{x}$
3. We need to find the average cost when x=100,1000x=100,1000, and 10,00010,000

STEP 2

First, let's find the average cost when x=100x=100. We can do this by substituting x=100x=100 into the given function.
Averagecost=0.4×100+7000100Average\, cost = \frac{0.4 \times100 +7000}{100}

STEP 3

Calculate the average cost when x=100x=100.
Average\, cost = \frac{40 +7000}{100} = \($\)70.40

STEP 4

Next, let's find the average cost when x=1000x=1000. We can do this by substituting x=1000x=1000 into the given function.
Averagecost=0.4×1000+70001000Average\, cost = \frac{0.4 \times1000 +7000}{1000}

STEP 5

Calculate the average cost when x=1000x=1000.
Average\, cost = \frac{400 +7000}{1000} = \($\)7.40

STEP 6

Finally, let's find the average cost when x=10,000x=10,000. We can do this by substituting x=10,000x=10,000 into the given function.
Averagecost=0.4×10,000+700010,000Average\, cost = \frac{0.4 \times10,000 +7000}{10,000}

SOLUTION

Calculate the average cost when x=10,000x=10,000.
Average\, cost = \frac{4000 +7000}{10,000} = \($\)1.10The average cost when manufacturing100 clocks is 70.40perclock,whenmanufacturing1000clocksits70.40 per clock, when manufacturing1000 clocks it's 7.40 per clock, and when manufacturing10,000 clocks it's $1.10 per clock.

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