Add or subtract as indicated.12
+ 9
A. -3
B. 21
C. 21
D. 21
Answer: B
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Determine the symmetries of the curve.r2 = -6 cos 5?
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Find the requested composition of functions.Given f(x) = 4x2 + 3x + 5 and g(x) = 3x - 4, find (g ? f)(x).
A. 4x2 + 3x + 1 B. 12x2 + 9x + 11 C. 12x2 + 9x + 19 D. 4x2 + 9x + 11
Solve the problem.The velocity of water in ft/s at the point of discharge is given by 
where P is the pressure 
of the water at the point of discharge. Find the rate of change of the velocity with respect to pressure if the pressure is 
A. 1.57 ft/s per lb/in2 B. 55.01 ft/s per lb/in2 C. 0.7859 ft/s per lb/in2 D. 0.0939 ft/s per lb/in2
Solve the problem.One rope pulls a barge directly east with a force of 79 newtons, and another rope pulls the barge directly north with a force of 62 newtons. Find the magnitude of the resultant force acting on the barge.
A. 4,898 newtons B. 17 newtons C. 100 newtons D. 141 newtons