Write the augmented matrix for the system. Do not solve the system. -5x + 2y = -3 -5y - 6z = 9 5z = -5
A. 
B. 
C. 
D. 
Answer: C
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Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local minimum at x = 0; local maximum at x = 2; concave down on (0, ?); concave up on (-?, 0) B. Local minimum at x = 0; local maximum at x = 2; concave up on (0, ?); concave down on (-?, 0) C. Local minimum at x = 2; local maximum at x = 0; concave down on (0, ?); concave up on (-?, 0) D. Local minimum at x = 2; local maximum at x = 0; concave up on (0, ?); concave down on (-?, 0)
Find the slope and the y-intercept of the given line.y = - 
x + 5
A. - 
; (0, -5)
B. - 
; (0, 5)
C. 
; (0, 5)
D. 
; (0, -5)
Determine whether the equation defines y as a function of x. y = x3
A. function B. not a function
Write a linear inequality for the situation described.It takes 4 cups of sugar to bake a cake and 3 cups of sugar to make a tray of cookies. Mary has a total of 20 cups of sugar to bake x cakes and y trays of cookies.
A. 3x + 4y ? 20 B. 3x + 4y ? 1 C. 4x + 3y ? 0 D. 4x + 3y ? 20