Perform the indicated operations and write the answer in the form 
where a and b are real numbers.(5 + 5i) - (-2 + i)
A. 7 + 4i
B. 3 + 6i
C. 7 - 4i
D. -7 - 4i
Answer: A
Mathematics
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, ? lies in quadrant I
Find sin 
.
A. 
B. 
C. 
D. 
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Find the amount of sales tax or tax rate and the total cost. Round money answers to the nearest cent if necessary.Amount of sale: $173 Tax rate: 9%
A. $13.84, $186.84 B. $15.57, $188.57 C. $17.30, $190.30 D. $155.70, $328.70
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Evaluate the algebraic expression for the given value of the variable.2x2 - 2x - 9 for x = -4
A. -33 B. 31 C. 15 D. -49
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Use cylindrical shells to find the volume of the solid. A sphere of radius .
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