Solve the problem.Sound levels in decibels can be computed by f(x) = 10log(x/So), where x is the intensity of the sound in watts per square meter and So = 1.00 x 10-12 watt/m2. A certain noise produces 9.89 x 10-5 watt/m2 of power. What is the decibel level of this noise? (Round to the nearest decibel)
A. 184 decibels
B. 80 decibels
C. 8 decibels
D. 70 decibels
Answer: B
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Find the distance between the pair of points on the number line.
, 
A. 
B. 
C. 
D. 
Solve.Acme Communication finds that the total revenue function associated with producing a new type of cellular phone is 
and the total cost function is 
where x represents the number of units of cellular phones produced. Find the total profit function, P(x) .
A. P(x) = x4 - 199x2 + 8000 B. P(x) = -x2 + 199x - 8000 C. P(x) = -2x2 + 221x - 9000 D. P(x) = -x2 + 215x + 8000
Write the equation for the line in the standard form.Containing (4, -2) and parallel to the graph of 3x + 4y = 0.
A. 4x + 3y = -6 B. 3x + 4y = 12 C. 3x + 5y = 4 D. 3x + 4y = 4
Solve the problem.A small company sells stock for 8
dollars per share. How much will 200 shares cost?
A. 200 dollars
B. 1650 dollars
C. 202 dollars
D. 24
dollars