Simplify the expression.
?
?
Write the answer without using negative exponents. Assume that the variable is restricted to those numbers for which the expression is defined.
?
A. ?
B. ?
C. ?
D. ?
Answer: B
Mathematics
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A. 
B. 3
C. 
D. 9
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Use a sum or difference identity to find the exact value.
A. - 
B. - 
C. -2
D. - 
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Evaluate the expression.(33.2 - 2.4) × 11
A. 6.8 B. 338.8 C. 349.8 D. 3388
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Find the requested angle.The supplement of 20°.
A. 250° B. 340° C. 70° D. 160°
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