Determine whether the following is always true or not always true. Given reasons for your answers.(u × v) ? w = u ? (w × v)
What will be an ideal response?
Not always true; (u × v) ? w = u ? (v × w), but v × w = -(w × v) from which it follows that the original equation is false if 
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Find the point of intersection.
 Figure 3.png)
Find the domain and range.{(2, -1), (-8, 1), (-1, -3), (6, 5)}
A. D = {2, 6, -8, -1}; R = {-1, 5, 1, -3} B. D = {2, 6, -8, -1}; R = {-1, 1, 5, 1, -3} C. D = {2, 6, -8, -1}; R = {-1, -1, 5, 1, -3} D. D = {-1, 5, 1, -3}; R = {2, 6, -8, -1}
Solve the problem.A railroad tunnel is shaped like a semi-ellipse. The height of the tunnel at the center is 15 ft and the vertical clearance must be 9 ft at a point 16 ft from the center. Find an equation for the ellipse.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Solve the inequality.(b - 2)(b - 3)(b - 4) < 0
A. (-?, 3) B. (-?, 2) or (3, 4) C. (2, 3) or (4, ?) D. (4, ?)