Solve the problem.A truck burns fuel at the rate (gallons per mile) of  while traveling at x mph. If fuel costs  per gallon, find the speed that minimizes fuel cost for a 200-mile trip.

A. 30.8 mph
B. 47 mph
C. 44.5 mph
D. 40 mph


Answer: D

Mathematics

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In the financial control phase of the financial planning process, a firm is primarily concerned with:

A. the amount of funds it generates internally. B. determining the investments it should purchase with free cash flows. C. determining its financial breakeven point. D. the degree of financial leverage that is acceptable. E. implementing financial plans and dealing with the feedback and the adjustments needed to meet its goals.

Mathematics

Using the table, set up proportions to solve.The table shows a scale for the cost of sending printed matter to different countries using the services of an undisclosed courier.What is the cost of shipping a package weighing 5.6 lb to Mexico?

A. $1.68 B. $1.30 C. $1.22 D. $1.40

Mathematics

Find the unit price.An 8-oz bottle of hair spray costs $4.74.

A. 47.4¢/oz B. 37.92¢/oz C. 0.5925¢/oz D. 59.25¢/oz

Mathematics

?Sketch the graph of the probability density function  over the interval . ?

A. ?


B. ?


C. ?


D. ?


E. ?


Mathematics