Use the Gauss-Jordan method to solve the system of equations. -3x - 7y = 59 -9x - 21y = 177
A. (-8, -5)
B. 
C. 
D. No solution
Answer: B
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Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = 
A. Domain: all points in the xy-plane; range: all real numbers; level curves: circles with centers at 
B. Domain: all points in the xy-plane satisfying x2 + y2 ? 9; range: real numbers 0 ? z ? 3; level curves: circles with centers at (0, 0) and radii r, 0 < r ? 3
C. Domain: all points in the xy-plane satisfying x2 + y2 = 9; range: real numbers 0 ? z ? 3; level curves: circles with centers at (0, 0) and radii r, 0 < r ? 3
D. Domain: all points in the xy-plane; range: real numbers 0 ? z ? 3; level curves: circles with centers at (0, 0) and radii r, 0 < r ? 3
Simplify the radical.
A. Cannot be simplified
B. 2
C. 4
D. 35
Divide using long division.
A. m2 + 3m + 4 B. 7m2 + 2m + 6 C. m2 + 2m + 7 D. 7m2 - 2m + 6
Find the root and standard form of the polynomial function with the given roots and y-intercept.Roots: 5 and -2; f(0) = 50
A. f(x) = 5(x - 5)(x + 2); f(x) = 5x2 + 15x + 50 B. f(x) = (x - 5)(x + 2); f(x) = x2 - 15x + 50 C. f(x) = -5(x + 5)(x - 2); f(x) = -5x2 - 15x - 50 D. f(x) = -5(x - 5)(x + 2); f(x) = -5x2 + 15x + 50