Solve the problem.Suppose f(x) = 29.9 + 1.4log (x + 1) models salinity of ocean water to depths of 
at a certain latitude. x is the depth in meters and f(x) is in grams of salt per kilogram of seawater. Approximate the salinity (to the nearest hundredth) when the depth is 130 meters.
A. 32.86
B. -26.94
C. 61.91
D. 64.71
Answer: A
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Find the ending value for the given percent change. A $120 stock gains 20% of its value.
A) $ 144 B) $ 140 C) $ 154 D) $ 24 E) $ 124
Which of the given series are absolutely convergent? Select the correct answer.
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Write the standard equation for the circle.Center at (22, 12), passing through the origin
A. (x - 12)2 + (y - 22)2 = 628 B. (x - 22)2 + (y - 12)2 = 628 C. (x - 12)2 + (y - 22)2 = 25 D. (x - 22)2 + (y - 12)2 = 25
Solve the problem.Two low-frequency sound waves with similar frequencies, producing the pressures 
and 
combine to form a pressure 
The variable t is time measured in seconds. Graph P in 
by 
and use the graph to determine the
frequency of the displayed beats. Rewrite the sum P as a product of trigonometric functions.
A. 1.5 beats per second
0.006 cos(61.5?t) cos(1.5?t)
[0, 1.2, .05] by [-0.01, 0.01, 0.001]
B. no beats
0.006 cos(123?t) cos(123?t)
[0, 1.2, .05] by [-0.01, 0.01, 0.001]
C. no beats
0.006 cos(61.5?t) cos(61.5?t)
[0, 1.2, .05] by [-0.01, 0.01, 0.001]
D. 3 beats per second
0.006 cos(123?t) cos(3?t)
[0, 1.2, .05] by [-0.01, 0.01, 0.001]