Simplify the expression.(-x)5 ? (-x)8
A. (-x)40
B. (x)13
C. (x)40
D. (-x)13
Answer: D
Mathematics
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Solve the problem.Let R ={(x, y): 1 ? x < 4, 0 ? y < 6}. Evaluate 
dA, where f is the function 
A. 192 B. 18 C. 87 D. 123
Mathematics
Provide an appropriate response.If you graphed x < -8, would you use a parenthesis or a square bracket? Explain why.
What will be an ideal response?
Mathematics
Find the sum or difference. Write the answer in lowest terms.
- 
A. - 
B. 0
C. - 
D. 
Mathematics
Use the order of operations to simplify the expression.9 ? 7 - 8
A. 9 B. 504 C. 55 D. 71
Mathematics