Solve the problem.The demand for a rooftop-mounted industrial air conditioner is given by the demand function D(x) = 
where x is the number of units produced each day and D(x) is the number sold each day. Assume that x is an integer. What is the domain of the demand function from a purely mathematical point of view?
A. All integers other than 5 or 0
B. All integers greater than 0
C. All integers
D. All integers other than -5 or 0
Answer: D
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Match the given equation with one of the graphs.
- 
= 1
A. 
B. 
C. 
D. 
Economies of scale and capital requirements are two of the barriers to entry that companies might try to establish in order to reduce the chances that a new competitor might enter the industry.
Answer the following statement true (T) or false (F)
The graph of a function is given. Decide whether it is even, odd, or neither.
A. even B. odd C. neither
List the potential rational zeros of the polynomial function. Do not find the zeros.f(x) = -2x3 + 4x2 - 3x + 8
A. ± 
, ± 
, ± 
, ± 1, ± 2, ± 4, ± 8
B. ± 
, ± 1, ± 2, ± 4, ± 8
C. ± 
, ± 1, ± 2, ± 4
D. ± 
, ± 
, ± 1, ± 2, ± 4, ± 8