Determine if the following is a linear equation in one variable. If not, state why.9x = 2 + (2y - 1)
A. It is a linear equation in one variable.
B. It is not a linear equation in one variable because it has more than one variable.
C. It is not a linear equation in one variable because it is not an equation.
D. It is not a linear equation in one variable because 9x has an exponent other than 1.
Answer: B
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Solve the inequality. Graph the solution set and write it in interval notation.4x + 1 < 21
A. (5, ?)
B. [5, ?)
C. (-?, 5)
D. (-?, 5]
Change the Cartesian integral to an equivalent polar integral, and then evaluate.
A. 
B. 
C. 
D. 
Solve.Find the area of a circular pipe with a cross-sectional area of 300 square inches. Round to the nearest hundredth.
What will be an ideal response?
Express the number in scientific notation.2500
A. 2.5 × 10-2 B. 2.5 × 10-3 C. 2.5 × 103 D. 2.5 × 102