Graph the function.y = -tan x
A. 
B. 
C. 
D. 
Answer: A
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Find the second derivative.y = 
+ 
A. - 
- 
B. 
- 
C. - 
+ 
D. 
+ 
Solve the problem.Two boats are pulling a disabled vessel toward the landing dock with forces of 920 lb and 840 lb. The angle between the forces is 23.7°. Find the direction and magnitude of the equilibrant.
A. 1723 lb at an angle of 168.7° with the 920-lb force B. 1723 lb at an angle of 78.7° with the 840-lb force C. 172 lb at an angle of 168.7° with the 920-lb force D. 1723 lb at an angle of 11.3° with the 920-lb force
Solve.The price of a stock rose 7 points, fell 8 points, and again fell 14 points. What was the stock's total change?
A. 13 points B. -15 points C. 29 points D. -29 points
Solve the system using the inverse matrix method.
A. x = 42, y = 63, z = 26; (42, 63, 26) B. x = -2, y = 13, z = -6; (-2, 13, -6) C. x = -7, y = 19, z = -6; (-7, 19, -6) D. x = 6, y = 0, z = 0; (6, 0, 0)