Solve the problem.Ozone levels inside a building should not exceed 50 parts per billion (ppb). In a scientific study, an air filter was able to remove 37% of the ozone entering a building. Approximate the range of ozone concentrations in outside air that this filter will reduce to an acceptable level.
A. 63 ppb ? x ? 79 ppb
B. x ? 95 ppb
C. x ? 79 ppb
D. x ? 79 ppb
Answer: D
Mathematics
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Use the Root Test to determine if the series converges or diverges.
A. Diverges B. Converges
Mathematics
Solve the problem.Consider the following simplified digital photograph that has a 
grid with four gray levels numbered from 
It shows a letter Y in dark gray on a white background.
Let A be the 3 × 3 matrix that represents this figure digitally. Find the matrix A.
A. 
B. 
C. 
D. 
Mathematics
State the quadrant in which the point lies.(14, 18)
A. Quadrant I B. Quadrant III C. Quadrant II D. Quadrant IV
Mathematics
Classify the statement as an example of theoretical or experimental probability.The probability that the number 22 bus will be late is 0.62.
A. experimental B. theoretical
Mathematics