Use the vertical line test to determine whether the graph represents a function.
A. function
B. not a function
Answer: A
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Identify a, b, c, with a > 0, for the quadratic equation.(x + 7)2 = (9x + 2)2
A. a = 80, b = 22, c = -45 B. a = 81, b = 36, c = 4 C. a = 1, b = 14, c = 49 D. Not quadratic
Solve.log21 = x
A. {0} B. {1} C. {4} D. {2}
Solve the problem.An order of award presentations has been devised for seven people: Jeff, Karen, Lyle, Maria, Norm, Olivia, and Paul. In how many ways can the men be presented first and then the women?
A. 144 B. 72 C. 5040 D. 2
Evaluate the expression for the given value of the variable.The algebraic expression 0.2x - 81 describes profit for a certain vendor when the vendor sells 
Evaluate the algebraic expression when 
to find the profit that the vendor makes from selling 
A. -$79.00 B. $719 C. $79 D. $160