Write the percent problem as an equation and solve.21 is 6% of what number?
A. 126
B. 3500
C. 350
D. 35
Answer: C
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Evaluate the algebraic expression under the given conditions.y2 - 5y - 8 for y = 3
A. -30 B. 16 C. 4 D. -14
Find the domain of the function.f(x) = log(x - 9)
A. (9, ?) B. (0, ?) C. (1, ?) D. (-9, ?)
Find the tax. Use $3700 for each personal exemption; a standard deduction of $5800 for single people, $11,600 for married people filing jointly, $5800 for married people filing separately, and $8500 for head of a household; and the tax rate schedule. 
The Greenwoods had an adjusted gross income of $57,963 last year. The had deductions of $1037 for state income tax, $4262 for property tax, $5171 in mortgage interest, and $1343 in contributions. The Greenwoods claim four exemptions and file a joint return.
A. $3884.45 B. $3852.50 C. $5517.50 D. $8099.45
Solve the problem.The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. Use the equation of the least squares line to predict the score on the test of a student who studies 3 hours. 
A. 65.5 B. 70.5 C. 71.8 D. 75.5