Solve the problem.The profit in dollars from the sale of x thousand compact disc players is 
Find the marginal profit when the value of x is 7.
A. $79
B. $119
C. $112
D. $72
Answer: D
Mathematics
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Use the figure below to answer the following question(s).
The nearest-neighbor tour with starting vertex D is uniquely D, E, A, B, C, D
A. only if x > 9. B. only if x > 4. C. only if x > 5. D. only if x > 1. E. regardless of the value of x.
Mathematics
Provide an appropriate response.Simplify 9x + 4 + 5x + 5 by combining like terms.
A. 23 B. 14x + 9 C. 4x + 9 D. 23x
Mathematics
Write a formula for the nth term of the infinite sequence. Do not use a recursion formula.6, 1, 
, 
, . . .
A. an = 
B. an = 
C. an = 
D. an = 6n
Mathematics
Graph the function.y = cot x + 2 
A. 
B. 
C. 
D. 
Mathematics