Graph the equation.-5x2 + 20x + 5y2 - 50y - 20 = -125
A. 
B. 
C. Empty set - the equation has no graph.
D. 
Answer: B
Mathematics
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Solve the problem.Mark and Rachel both work for Smith Landscaping Company. Mark can finish a planting job in 4 hours, while it takes Rachel 2 hours to finish the same job. If Mark and Rachel will work together on the job, and the cost of labor is $40 per hour, what should the labor estimate be? (Round to the nearest cent, if necessary.)
A. $53.33 B. $30.00 C. $120.00 D. $106.67
Mathematics
Provide an appropriate response.Perform the operation and simplify your answer: 
- 
What will be an ideal response?
Mathematics
Find the indefinite integral.
?
What will be an ideal response?
Mathematics
Evaluate.(-9)2
A. 18 B. 81 C. -18 D. -81
Mathematics