Find the function value.Let f(x) = e-x. Find f(3.9), rounded to four decimal places.
A. 1.4347
B. 10.6013
C. 49.4024
D. 0.0202
Answer: D
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Add in the indicated base.
A. 4135 B. 4035 C. 3135 D. 4235
Provide an appropriate response.Sketch the graph of f(x) = x2 - 1.
A. 
B. 
C. 
D. 
Solve the problem.Use the formula D = 10.0 log(S/S0), where the loudness of a sound in decibels is determined by S, the number of watt/m2 produced by the soundwave, and S0 = 1.00 × 10-12 watt/m2. A certain noise produces 8.54 × 10-5 watt/m2 of power. What is the decibel level of this noise? (Round to the nearest unit.)
A. 79 decibels B. 69 decibels C. 8 decibels D. 183 decibels
Solve the problem.A satellite following the hyperbolic path shown in the picture turns rapidly at (0, 6) and then moves closer and closer to the line y = 4x as it gets farther from the tracking station at the origin. Find the equation that describes the path of the satellite if the center of the hyperbola is at (0, 0).
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1