Add or subtract, if possible. Assume that all variables represent non-negative values and be sure to simplify your answer.8
- 11
+ 5
A. 2
B. 2
C. 13
- 11
D. 13
- 11
Answer: D
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Identify the number as real, complex, pure imaginary, or nonreal complex. More than one of these descriptions may apply.-10 + i
A. Real, complex B. Complex, pure imaginary, nonreal complex C. Nonreal complex D. Complex
Decide what number must be added to the binomial to make a perfect square trinomial.x2 - 
x
A. 
B. - 
C. - 
D. 
Solve the system of two equations in two variables.-6x + 66 = 6y 3x - 3y = 15
A. (7, 4) B. (8, 4) C. No solution D. (8, 3)
Solve the problem.30 marbles are to be divided into three bags so that the second bag has three times as many marbles as the first bag and the third bag has twice as many as the first bag. If x is the number of marbles in the first bag, find the number of marbles in each bag by solving the equation x + 3x + 2x = 30.
A. 1st bag = 6 marbles; 2nd bag = 18 marbles; 3rd bag = 12 marbles B. 1st bag = 6 marbles; 2nd bag = 14 marbles; 3rd bag = 10 marbles C. 1st bag = 5 marbles; 2nd bag = 10 marbles; 3rd bag = 15 marbles D. 1st bag = 5 marbles; 2nd bag = 15 marbles; 3rd bag = 10 marbles