Solve the problem.Two sound waves, producing the pressures 
and 
combine on a person's ear drum to produce the pressure 
Find the amplitude and phase shift for the total pressure.
A. A = 2.2, ? = 849.079
B. A = 2.2, ? = 0.9273
C. A = 5, ? = 849.079
D. A = 5, ? = 0.6435
Answer: D
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Answer the question.Consider the function G(x) = 
, where f(t) oscillates about the line y = 2 over the x-region [0, 12].The graph is given below:
At what values of x over this region do the local minima of G(x) occur?
A. ? 2.1, ? 8.0 B. ? 10.9, 12 C. 0, ? 4.4, ? 10.9 D. ? 4.4, ? 10.9
Find the work done by F over the curve in the direction of increasing t.F = 6yi + 
j + (6x + 5z)k; C: r(t) = ti + t2j + tk, 0 ? t ? 2
A. W = 59 + 20
B. W = 38 + 20
C. W = 0
D. W = 38 + 
Perform the indicated operation.103.28 + 53.87 + 36.125
A. 193.275 B. 194.275 C. 193.375 D. 193.285
Use the vertical line test to determine whether or not the graph is a graph in which y is a function of x.
A. not a function B. function