Solve the problem.Suppose that c(x) = 3x3 - 20x2 + 5675x is the cost of manufacturing x items. Find a production level that will minimize the average cost of making x items.
A. 5675 items
B. -69 items
C. There is not a production level that will minimize average cost.
D. 82 items
Answer: C
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On a certain island there are initially 4.6 new species per year introduced. This number decreases by 4% each year. But conditions cause some species to become extinct. Initially 1.7 species per year become extinct. The number increases by 14% each year. ? A: Using N for new species per year, find a formula that gives the number of new species per year introduced after t years. ? B: Using E for extinction rate, find a formula that gives the rate of extinction t years. ? C: Make a graph that shows both N and E over the first 10 years. ? D: When will the rate of extinction be the same as the rate new species are being introduced? Round your answer to two decimal places if necessary.
What will be an ideal response?
Find the indicated root, or state that the expression is not a real number.
A. 1 B. 0 C. -1 D. not a real number
Find the total surface area and volume of the solid object. (Round to the nearest whole number and use the ? key for ?.)
A. T = 108 cm2, V = 83 cm3 B. T = 62 cm2, V = 62 cm3 C. T = 62 cm2, V = 83 cm3 D. T = 108 cm2, V = 62 cm3
Write the statement as an inequality.x is less than 4
A. x > 4 B. x < 4 C. x ? 4 D. x ? 4