Perform row operations on the augmented matrix as far as necessary to determine whether the system is independent, dependent, or inconsistent. x + 2y + 2z = -4 4y + 4z = 0 z = 3
A. Dependent
B. Independent
C. Inconsistent
Answer: B
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Find the domain and range.f(x) = 
A. Domain: x ? -4; range: y ? 0 B. Domain: : x ? 0; range: All real numbers C. Domain: All real numbers; range: y ? -4 D. Domain: All real numbers; range: All real numbers
Solve the problem.A baker can decorate the day's cookie supply four times as fast as his new assistant. If they decorate all the cookies working together in 24 minutes, how long would it take for each of them to decorate the cookies working individually?
A. baker: 7
min
assistant: 29 min
B. baker: 120 min
assistant: 30 min
C. baker: 30 min
assistant: 120 min
D. baker: 120 min
assistant: 480 min
Solve the problem using matrices.Find real numbers a, b, and c such that the graph of the function y = ax2 + bx + c contains the points 
(1, -1), and (3, -19).
What will be an ideal response?
Combine like terms.2mn - 2mn
A. 4mn B. 0 C. -mn D. mn