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
Answer: B
Mathematics
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Solve the problem.An arch for a bridge over a highway is in the form of a semiellipse. The top of the arch is 30 feet above ground (the major axis). What should the span of the bridge be (the length of its minor axis) if the height 27 feet from the center is to be 10 feet above ground?
A. 28.64 ft B. 162 ft C. 57.28 ft D. 45.88 ft
Mathematics
Evaluate the expression.(-7)2
A. -14 B. -49 C. 14 D. 49
Mathematics
Perform the indicated operation. Express the solution in scientific notation.
A. 109 B. 330 × 10-9 C. 10-9 D. 10-8
Mathematics
Find the greatest common factor of the numbers.480, 2700
A. 180 B. 60 C. 480 D. 30
Mathematics