Using the concepts of graphing inequalities, determine the inequality which describes the graph.
A. x ? 2
B. y ? 2
C. x ? 2
D. y ? 2
Answer: A
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Graph the inequality.y ? 2x - 4
A. 
B. 
C. 
D. 
Simplify. Write your answers in the form of a+bi, where a and b are real numbers.(7 - 6i)(6 + 7i)
A. 84 + 13i B. -42i2 + 13i - 42 C. 84 - 13i D. 0 - 85i
Solve the problem.The average cost per tape, in dollars, for a company to produce x sports videotapes is given by the functionA(x) = 
for x > 0
Graph the function on the interval (0, ?) and complete the following:A(x) ? 
as x ? ?.
A. 
A(x) ? 0 as x ? ?.
B. 
A(x) ? 1 as x ? ?.
C. 
A(x) ? 15 as x ? ?.
D. 
A(x) ? 20 as x ? ?.
Solve the problem.An airplane leaves Los Angeles for Denver at a speed of 420 mph. Thirty minutes later, a plane going from Denver to Los Angeles leaves Denver, which is 850 miles from Los Angeles, at a speed of 470 mph. When they meet, how far are they from Denver?
A. 115 mi B. 338 mi C. 286 mi D. 57 mi