Solve the problem.The population of a city is 
times what it was a decade earlier. Write this mixed number as a percent.
A. 178%
B. 152%
C. 165%
D. 65%
Answer: C
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Factor completely.u2 - 2uv - 80v2
A. (u - 8v)(u + v) B. (u + 8v)(u - 10v) C. (u - v)(u + 10v) D. (u - 8v)(u + 10v)
Find the domain of the composite function f?g.f(x) = 
, g(x) = 
A. (-?, -8) ? (-8, -1) ? (-1, 0) ? (0, ?) B. (-?, 0) ? (0, -1) ? (-1, ?) C. (-?, -8) ? (-8, 0) ? (0, ?) D. (-?, ?)
Evaluate the radical expression if it is a real number. Use a calculator to approximate irrational numbers to the nearest hundredth. If the expression is not a real number, so state.
A. 625
B. 5
C. 
D. not a real number
Use the discriminant to determine what type of solutions exist for the quadratic equation. Do not solve the equation.
A. nonreal complex numbers, complex conjugates B. rational, unequal C. rational, equal D. irrational, unequal