Simplify the expression. Write the answer using positive exponents.(xy)-8
A. -8xy
B. 
C. -x8y8
D. 
Answer: D
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Solve the inequality by using the method of your choice. State the solution set in interval notation and graph it.x2 - 8 ? 7x
A. [-8, -1]
| -8? | -1 |
B. [1, 8]
| 1? | 8 |
C. [-1, 8]
| -1? | 8 |
D. [-8, 1]
| -8? | 1 |
Solve the problem.A rectangular lot whose perimeter is 440 feet is fenced along three sides. An expensive fencing along the lot's length costs $23 per foot , and an inexpensive fencing along the two side widths costs only $11 per foot. The total cost of the fencing along the three sides comes to $4960. What are the lot's dimensions?
A. Length 127 ft; Width 93 ft B. Length 240 ft; Width 200 ft C. Length 120 ft; Width 100 ft D. Length 114 ft; Width 106 ft
Combine. Simplify the answer.15
+ 5
A. 20
B. 21
C. 19
D. 15
Describe the natural domain of the function. f(x) = 
A. The set of all real numbers
B. The set of all real numbers less than 8
C. The set of all real numbers greater than 
D. The set of all real numbers except 8