Write the slope-intercept form of the equation for the line passing through the given pair of points.(4, -5) and (4, 9)
A. y = -5
B. x = 4
C. -5x + 9y = 0
D. 9x - 5y = 0
Answer: B
Mathematics
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Solve for the missing number.
= 
A. - 
B. - 
C. - 
D. 
Mathematics
The loudness of a sound of intensity x, measured in watts per square meter, is defined as L(x) = log (
), where xo = 10-3.A company with load machinery needs to cut its sound intensity to 72% of its original level. By how many decibels should the loudness be reduced?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Draw the angle in standard position.-120°
A. 
B. 
C. 
D. 
Mathematics
Simplify the difference quotient 
, and evaluate as h approaches 0 to find the rate of change of f(x).f(x) = 
A. 
B. - 
C. - 
D. 
Mathematics