Graph the function. Give the domain and range.f(x) = 
A. domain: (4, ?); range: (0, ?)
B. domain: (-4, ?); range: (0, ?)
C. domain: (-?, -4); range: (0, ?)
D. domain: (-4, ?); range: (-?, ?)
Answer: B
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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 soundwave, and 
A certain noise produces 6.35 × 10-4 W/m2 of power. What is the decibel level of this noise?
A. 203 dB B. 78 dB C. 88 dB D. 9 dB
Find the midpoint of the segment with the given endpoints.(5, 1) and (-5, 3)
A. 
B. (0, 4)
C. 
D. 
Find the slope and the y-intercept of the given line.y = -3x + 5
A. -3, (0, 5) B. -3, (0, -5) C. -5, (0, -3) D. 5, (0, -3)
Factor completely.4x2 - 81
A. Prime B. (2x + 9)(2x - 9) C. (2x + 9)2 D. (2x - 9)2