Evaluate the function.Find f(5, 0, 7) when f(x, y, z) = 5x2 + 5y2 - z2.
A. -24
B. 79
C. 174
D. 76
Answer: D
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Determine whether or not the relationship shown in the table is a function.
Does the table define x as a function of y?
A. Yes B. No
The top of a ladder slides down a vertical wall at a rate of 0.15 m/s . At the moment when the bottom of the ladder is 1.5 m from the wall, it slides away from the wall at a rate of 0.3 m/s. How long is the ladder?
a. 3.9 m b. 2.9 m c. 4.4 m d. 3.4 m e. 2.4 m
Complete the ordered pairs. Then graph the equation by plotting the points and drawing a line through them.x = 4y - 5 ( , 0), (0, ), 
A. (-5, 0), 
, 
B. (-5, 0), 
, 
C. 
, (0, -5), 
D. (0, 0), (0, 0), 
From the graph of the parabola, determine whether the parabola opens upward or downward, and find the vertex, axis of symmetry, and range of the function. Find the maximum or minimum value of the function and the intervals on which the function is increasing or decreasing.
A. Up, (2, -9), x = -9, [-9, ?), min -9, dec (-?, 2], inc [2, ?) B. Up, (2, -9), x = 2, [-9, ?), min -9, dec (-?, 2], inc [2, ?) C. Up, (2, -9), x = 2, [-4, 8], min -4, dec (-?, 2], inc [2, ?) D. Up, (2, -9), x = 2, [-9, ?), min -4, dec (-?, 2), inc (2, ?)