Find all real and imaginary solutions.x4 + 81x2 = 0
A. {±9i}
B. {0, -9i}
C. {0, ±9i}
D. 
Answer: C
Mathematics
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Graph the function.f(x) = 
- 1
A. 
B. 
C. 
D. 
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Graph the solution set of the system of inequalities.y ? -x2 - 6x - 4y ? x2 + 6x + 4
A. 
B. 
C. 
D. 
Mathematics
Determine if the type of relation is linear, nonlinear, or none.
A. nonlinear B. none C. linear
Mathematics
Solve the problem.Mel plans to fence his yard for his new puppy. The yard is a 47 ft by 85 ft rectangle. Fencing costs $12 per 10 ft section. What is the cost of the fence not including unused fencing?
A. $158.40 B. $112.80 C. $633.60 D. $316.80
Mathematics