Find the average value of the function over the given interval.f(x) = -2x + 8 on [-8, 4]
A. 144
B. 4
C. 24
D. 12
Answer: D
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Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
Solve the following problem. Be sure to make a diagram of the situation with all the given information labeled. ? A man wandering in the desert walks 2.7 miles in the direction S 27° W. He then turns 90° and walks 3.7 miles in the direction N 63° W. At that time, how far is he from his starting point? ? Apply the rules regarding the use of significant digits when determining your answers. Round the distance to the nearest tenth of miles and angle to the nearest degree. ? Distance from starting point = __________ mi ? What is the man's bearing from his starting point? ? __________ __________°__________ ?
What will be an ideal response?
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Solve the problem.Use the formula L = 10 ? log 
, where the loudness of a sound in decibels is determined by I, the number of watts per square meter produced by the sound wave, and 
A certain noise produces 9.92 × 10-5 watts per square meter of power. What is the decibel level of this noise?
A. 70 db B. 184 db C. 8 db D. 80 db