The graph shows the monthly revenue in millions of dollars of a growing company after the company doubled its advertising. Use the graph to solve the problem. During what period of time is the company's monthly revenue decreasing?

A. From the time that the advertising was doubled until the 6th month
B. From the 6th month to the 9th month
C. From the time that the advertising was doubled until the 9th month
D. From the 9th month to the 12th month


Answer: B

Mathematics

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?A license plate contains three diffirent letters followed by two diffirent numbers. How many different license plates can be made?

A.

?26(25)(24)(10)(9)(8)


B.

?1,404,000


C.

?140,400


D.

?


E.

?b and d


Mathematics

Solve the problem.The charges for renting a moving van are $65 for the first 30 miles and $7 for each additional mile. Assume that a fraction of a mile is rounded up. Find a symbolic representation for a function f that computes the cost of driving the van x miles, where  (Hint: express f as a piecewise-constant function.) Then, determine the cost of driving the van 98 miles.

A. f(x) = ; $6846
B. f(x) = ; $541
C. f(x) = ; $961
D. f(x) = ; $961

Mathematics

Write the partial fraction decomposition of the rational expression.

A. -  +  + 
B.  +  - 
C.  +  + 
D. -  -  - 

Mathematics

Find the derivative of the function at the given value of x using a graphing utility. If necessary, round to four decimal places.f(x) = x sin(7x); x = 9

A. 62.1041 B. 1506.1713 C. 62.2783 D. -1506.1713

Mathematics