Express in terms of a base raised to a positive exponent. Then simplify, if possible.(-5)-4
A. 625
B. -625
C. - 
D. 
Answer: D
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = (2x - 9y)3
A. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
c ? 0
B. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
c ? 0
C. Domain: all points in the xy-plane; range: all real numbers; level curves: lines 
D. Domain: all points in the xy-plane; range: real numbers z ? 0; level curves: lines 
Solve the system of linear equations. 9x - 33 = -6y 3x - 3y = -9
A. (1, 5) B. (0, 5) C. (1, 4) D. No solutions
Solve.It takes 12 hours for 7 people to paint a house. How long will it take 2 people to do the job?
A. 3.4 hr B. 37.8 hr C. 42 hr D. 3.3 hr
The graph of a function f is given. Use the graph to answer the question.Use the graph of f given below to find f(-12).
A. -8 B. 0 C. -12 D. 20