Change the number 
to base ten.
?
A. 519
B. 239
C. 2,856
D. 231
E. 400
Answer: B
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Solve the problem.A merchant has coffee worth $30 a pound that she wishes to mix with 20 pounds of coffee worth 
a pound to get a mixture that can be sold for 
a pound. How many pounds of the 
coffee should be used?
A. 15 pounds B. 5 pounds C. 30 pounds D. 10 pounds
Solve the problem.The cost of manufacturing a particular videotape (in dollars) is c(x) = 12,000 + 8x, where x is the number of tapes produced. The average cost per tape (in dollars), denoted by 
(x), is found by dividing c(x) by x. Find 
(x).
A. $6 B. $10 C. $14 D. does not exist
Find the area.
A. 63 ft2 B. 126 ft2 C. 49 ft2 D. 27 ft2
Use the graph of y = f(x) to sketch the graph of y = f(-x). Label at least three points on the graph.
A. 
B. 
C. 
D. 