Solve the equation.3y(5y + 9) = 6
A. 
B. 
C. 
D. 
Answer: B
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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 = 3 ; local maximum at x = -3 ; concave up on (-?, -3) and (3, ?); concave down on (-3, 3) B. Local minimum at x = 3 ; local maximum at x = -3 ; concave up on (0, ?); concave down on (-?, 0) C. Local minimum at x = 3 ; local maximum at x = -3 ; concave down on (0, ?); concave up on (-?, 0) D. Local minimum at x = 3 ; local maximum at x = -3 ; concave down on (-?, -3) and (3, ?); concave up on (-3, 3)
Solve the problem. 3xy = z2 x - y + z = 3x2 + y2 - 2z2 = -72
A. {(3, 9, 9), (-3, -9, 9)} B. {(3, 9, 9), (9, 3, 9)} C. {(-3, -9, 9), (9, 3, 9)} D. {(3, 9, 9), (-9, -3, 9)}
Solve the equations.2z2 + 3 = 165
A. ±10 B. ±9 C. 9 D. 82.5
Use your graphing calculator to determine if the equation appears to be an identity or not by graphing the left expression and right expression together.
?
What will be an ideal response?