Find the solution set for each inequality. Graph the solution set on a number line and write it in interval notation.|x + 7| ? 0
A. (-?, -7) ? (-7, ?)
B. {-7}
C. (-?, 7) ? (7, ?)
D. (-?, ?)
Answer: D
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Find the product.(r - 11)2
A. r2 - 22r + 121 B. r + 121 C. r2 + 121 D. 121r2 - 22r + 121
Simplify using the quotient rule.
A. 2y4 B. 2xy4 C. 12xy4 D. 2x19y20
Find the equation of the line described, and express your answer in the specified form.Perpendicular to the line -5x + 7y = 54; passes through the point (-8, 9); standard form
A. 7x - 5y = -11 B. 7x - 5y = 54 C. -5x - 7y = -11 D. 7x + 5y = -11
First, use front-end rounding to round each number and estimate the answer. Then, find the exact answer.Julian's grocery bill was $9.32. He gave the clerk a $20 bill. How much change should he receive?
A. Estimate: $11; exact: $10.67 B. Estimate: $11; exact: $9.68 C. Estimate: $11; exact: $10.68 D. Estimate: $9; exact: $9.32