The given function is one-to-one. Find f-1(x).f(x) = 7x3 - 3
A. f-1(x) = 
2
B. f-1(x) = 
+ 3
C. f-1(x) = 
D. f-1(x) = 
Answer: C
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Answer the given question by setting up and solving the appropriate proportion. If necessary, round the answer to two decimal places.One computer line printer can print 800 lines/min, and a second can print 2000 lines/min. If they print a total of 4200 lines while printing together, how many lines does each print?
A. 1100 lines, 3100 lines B. 1400 lines, 2800 lines C. 1200 lines, 3000 lines D. 1000 lines, 3200 lines
Find the derivative of y with respect to x, t, or ?, as appropriate.y = ln 6x
A. 
B. - 
C. 
D. - 
Solve the problem.The manager of a pet store has found that if the price of a dog collar is 
then x collars will be sold. An expression for the total revenue from the sale of x collars is R(x) = 90x - 
. Find the number of collars that will produce maximum revenue.
A. 400 B. 360 C. 720 D. 340
Use the data set {d1, d2, d3, ..., d255} consisting of 255 numbers to answer the following question(s).After sorting the data set (in increasing order from left to right), the first quartile is
A. the number in the 64th position. B. the average of the numbers in the 64th and 65th positions. C. the average of the numbers in the 63rd and 64th positions. D. the number in the 65th position. E. none of these