Determine which value(s), if any, must be excluded from the domain of the variable in the expression.
A. x = 
, x = - 
B. x = 45
C. x = 5
D. none
Answer: C
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The profit P, in thousands of dollars, for a certain company depends on the number n of items produced. The relationship is given by
?
.
?
A: Plot the graph of the profits versus number of items produced.B: What number of items produced will result in maximum profit?C: The marginal profit is the rate of change 
. What is the value of at the production level you found in part B?
What will be an ideal response?
Graph the system of inequalities. Shade the region that represents the points of intersection.
A. 
B. 
C. 
D. 
Solve.Find the area of an oak cabinet surface that is constructed by a carpenter as a large square with sides of 6x feet and has a square cut-out region whose sides are y feet. Write your answer in factored form.
A. A = (6x + y)(6x - y) ft2 B. A = 36(x + y)(x - y) ft2 C. A = (36x + y)(36x - y) ft2 D. A = (6x + y)2 ft2
Use the imaginary unit to write the expression.
A. 40i
B. i
C. ±40
D. -40i