Solve the problem.The cost in millions of dollars for a company to manufacture x thousand automobiles is given by the function C(x) = 4x2 - 24x + 72. Find the number of automobiles that must be produced to minimize the cost.
A. 6 thousand automobiles
B. 12 thousand automobiles
C. 3 thousand automobiles
D. 36 thousand automobiles
Answer: C
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Give the appropriate counting number answer to the problem.Each gallon of porch and deck paint covers 200 square feet. How many gallons are needed to cover 1321 square feet?
A. 5 B. 6 C. 7 D. 8
Simplify.
A. 
B. 
C. 
D. 
Determine whether the relation represents a function. If it is a function, state the domain and range.
A. function domain: {Ms. Lee, Mr. Bar} range: {Bob, Ann, Dave} B. function domain: {Bob, Ann, Dave} range: {Ms. Lee, Mr. Bar} C. not a function
Use a proportion to solve the problem.The ratio of the width to the length of a picture frame is 8 to 13. If the width of the frame is 9 inches, what is its length?
A. 5.5 inches B. 22 inches C. 17 inches D. 14.625 inches