For the given function expressed verbally, give a graphical representation. To convert x inches to y centimeters, multiply x by 2.54. Let y = f(x) and 0?x?50.
A. 
B. 
C. 
D. 
Answer: C
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Calculate the slope of the line passing through the given points. If the slope is undefined, so state. Then indicate whether the line rises, falls, is horizontal, or is vertical.(7, 4), (2, 5)
A. 
, rises
B. - 
, falls
C. - 5, falls
D. 1, rises
Use the indicated property to provide a new expression equal to the given expression. Simplify, if possible.8(k - 2); distributive
A. 8k - 16 B. k - 16 C. 8k + 16 D. 8k - 2
Combine the numbers.-2 - (-15) + (-20)
A. -37 B. 3 C. 7 D. -7
The total weekly sales for a newly released portable media player (PMP) increased each week. At the same time, the total weekly sales for another newly released PMP decreased each week. Models that approximate the total weekly sales S (in thousands of units) for each PMP are
?
?
where x represents the number of weeks each PMP was in stores, with x = 0 corresponding to the PMP sales on the day each PMP was first released in stores. After how many weeks will the sales for the two PMPs be equal?
?
A. 11 weeks
B. 9 weeks
C. 7 weeks
D. 3 weeks
E. 5 weeks