Simplify the expression. If the expression contains any variables, assume that they represent positive real numbers. Write your answer with only positive exponents.
1/2
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the composition. If f(x) = 2x2 - 4x and g(x) = -2x, find (g ? f)(x)
A. 8x2 - 4x B. 2x2 - 8 C. -4x2 + 8x D. -4x3 + 8x2
Mathematics
Multiply or divide as indicated. Write the answer in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Solve the proportion for the given variable.
= 
A. 26
B. 6
C. 
D. 13
Mathematics
Solve the equation.
x - 
x = 5
A. {75} B. {150} C. {-75} D. {-150}
Mathematics