Multiply.(x + y - 4)(x + y + 4)
A. x2 + 8xy + y2 - 16
B. x2 + y2 - 16
C. x2 + 2xy + y2 + 8x + 8y - 16
D. x2 + 2xy + y2 - 16
Answer: D
Mathematics
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Graph the function.y = cot(4x)
A. 
B. 
C. 
D. 
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Solve.
- 
= 5
A. 15
B. 45
C. 
D. 27
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Find the exact value for the expression.tan 
A. 
B. 
C. 1
D. -1
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Make the indicated temperature conversion. Round answers to one decimal place if necessary.Convert 48°F to Celsius.
A. 58.7°C B. 28.8°C C. 118.4°C D. 8.9°C
Mathematics