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.
Answer: D
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Evaluate the expression.-10 ? (7 - 4) - 42
A. -14 B. 16 C. -46 D. 3
Solve the problem.The total sales in dollars of some small businesses fluctuates according to the equation S = A + B sin ?x/6, where x is the time in months, with x = 1 corresponding to January, A = 6700, and 
Determine the month with the greatest total sales and give the sales in that month.
A. March; $9500 B. September; $3900 C. December; $9500 D. June; $6700
Solve.Find the volume of the rectangular solid. Express the volume as a product, then multiply and simplify. 
A. -9x2 + 36x + 64 B. -9x3 + 36x2 + 63x C. 9x2 - 48x + 64 D. 9x3 - 48x2 + 63x
Simplify the rational expression. If the rational expression cannot be simplified, so state.
A. 
B. 
C. cannot be simplified
D. x + 5