Find all solutions of the equation in the complex number system.x2 + 16 = 0
A. {4i, -4i}
B. {8}
C. {4}
D. {4, -4}
Answer: A
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Provide an appropriate response.Find a 3 × 2 matrix 
with a11 = a22 = 0, all other aij equal to 1.
What will be an ideal response?
Solve the problem.A summer camp wants to hire counselors and aides to fill its staffing needs at minimum cost. The average monthly salary of a counselor is $2400 and the average monthly salary of an aide is $1100. The camp can accommodate up to 35 staff members and needs at least 20 to run properly. They must have at least 10 aides, and may have up to 3 aides for every 2 counselors. How many counselors and how many aides should the camp hire to minimize cost?
A. 19 counselors and 23 aides B. 13 counselors and 16 aides C. 8 counselors and 12 aides D. 13 counselors and 17 aides
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Solve the equation for the specified variable.S = 2?rh + 2?r2 for h
A. h = 2?(S - r)
B. h = 
- 1
C. h = S - r
D. h = 