Determine if the matrix is in row-echelon form.
A. Yes
B. No
Answer: B
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Find x and y.
= 
A. x = 7, y = 7 B. x = 2, y = 2 C. x = 7, y = 2 D. x = 2, y = 7
Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = -2x + 2y
A. Domain: all points in the xy-plane; range: real numbers z ? 0; 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: all real numbers; level curves: lines 
c > 0
Solve the problem.Find three consecutive integers such that the sum of the squares of the smaller two is equal to the square of the largest.
A. -1, 0, 1 or 3, 4, 5 B. -1, 0, 1 C. -3, -4, -5 D. 3, 4, 5
Change the number to base ten.
?
?
A. 3,030 B. 174 C. 606 D. 170 E. 870