For the given vectors u and v, evaluate the expression.u = 
, v = 
Find 4u + 2v.
A. 
B. 
C. 
D. 
Answer: A
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Add or subtract. Express the answer as a mixed number.1
+ 1
A. 3
B. 1
C. 3
D. 2
Multiply.8 ? (-5) ? 5 ? (-4) ? 5 ? (-7) ? (-8)
A. -6 B. 224,000 C. -224,000 D. -27,992
Find the amount of taxable income and the tax owed. The letter following the name indicates the marital status, and all married people are filing jointly. 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 following tax rate schedule. 
A. $56,317; $8846.75 B. $51,722; $7698.00 C. $59,122; $9548.00 D. $48,917; $6996.75
Use the REGRESSION feature on a graphing calculator.Efficiency experts rate employees according to job performance and attitude. The results for several randomly selected employees are given below.
Find the regression line which can be used to predict performance rating if attitude rating is known.
A. y = 92.3 - 0.669x B. y = 2.81 + 1.35x C. y = -47.3 + 2.02x D. y = 11.7 + 1.02x