Write the phrase as a variable expression. Use x to represent "a number."The product of 9 and a number
A. 
B. 9 - x
C. 9x
D. 9 + x
Answer: C
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Use a calculator to evaluate the following expression. (Round your answer to three decimal places.)
?
?
A. 863.773 B. 893.773 C. 873.773 D. 3.137 × 1010 E. 883.773
Solve the quadratic equation by completing the square.12m2 + 5m = 0
A. m = 0
B. ± 
C. 
, 0
D. - 
, 0
Simplify the expression. Write your answer with only positive exponents. Assume that all variables represent nonzero real numbers.
2
A. 
B. 
C. 
D. - 
Determine if the following is a linear equation in one variable. If not, state why.-4(2x - 5) = 4x2 + 10
A. It is not a linear equation in one variable because it is not an equation. B. It is not a linear equation in one variable because it has more than one variable. C. It is a linear equation in one variable. D. It is not a linear equation in one variable because x2 has an exponent other than 1.