Find the domain of the function.f(x) = x2 + 8
A. {x|x ? -8}
B. {x|x ? -8}
C. {x|x > -8}
D. all real numbers
Answer: D
Mathematics
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Solve the problem.As a safety precaution, emergency workers evacuated residents within a 5 mile radius of a chemical spill. The evacuated area can be represented by the inequality x2 + y2 ? 25. Graph this inequality. 
A. 
B. 
C. 
D. 
Mathematics
Write the prime factorization of the number.63
A. 72 B. 32 ? 7 C. 21 ? 3 D. 9 ? 7
Mathematics
Simplify. Assume that all variables represent positive real numbers.6
- 2
- 
A. 17x
B. 18x
C. 4x
D. 3x
Mathematics
Solve the problem.A rectangular garden has dimensions of 21 feet by 14 feet. A gravel path of equal width is to be built around the garden. How wide can the path be if there is enough gravel for 564 square feet?
A. 8.5 ft B. 6 ft C. 8 ft D. 7 ft
Mathematics