Simplify the expression. Write the answer with only positive exponents. Assume that all variables represent nonzero real numbers.(2-2)(2-5)
A. 
B. 
C. 210
D. 27
Answer: A
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?What is not the reason that the Real Number System is considered complete? ?
A. Because there are no holes or spaces in the Real Number System number line.? B. ?Because every decimal number, whether terminating or non-terminating, is represented on the number line by only one point. C. ?Every point on the Real Number System number line is represents only one number. D. ?There are an infinite number of points in the Real Number System that correspond to an infinite number of points on the number line. E. ?All of the above. F. ?None of the above.
Sketch the graph of the equation. Identify the vertex and the intercepts.y = x2 + 4
A. Vertex: (0, 4);
x-intercepts: none;
y-intercept: (0, 4)
B. Vertex: (0,-4);
x-intercepts: (-2, 0) and (2, 0);
y-intercept: (0, -4)
C. Vertex: (4, 0);
x-intercept: (4, 0);
y-intercept: (0, 16)
D. Vertex: (0, 4);
x-intercepts: (-2, 0) and (2, 0);
y-intercept: (0, 4)
Find the difference.- 
- 
A. - 
B. - 1
C. 
D. - 
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