Use a positive rational exponent to write the expression.
A. x-2/9
B. -x2/9
C. x-9/2
D. x9/2
Answer: D
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Use a number line to find the sum.-6 + 3
A. -9 B. 9 C. -3 D. 3
Find the tax refund or tax due for the following people. The letter following the name indicates the marital status. Assume a 52-week year and that all married people are filing jointly. Use $4050 for each personal deduction, a standard deduction of $6300 for single taxpayers, $12,600 for married taxpayers filing jointly, and $9300 for head of household and the tax rate schedule.
A. $554.38 due B. $5,973.22 due C. $5,973.22 refund D. $554.38 refund
The rectangular coordinates of a point are given. Find polar coordinates for the point.(-3, 3)
A. 
B. 
C. 
D. 
Select the best estimate of the specified quantity.The product 84.3 × 97.4
A. 7990 B. 80,000 C. 8000 D. 8010