Solve the problem.The pH scale is used by chemists to measure the acidity of a solution. It is a base 10 logarithmic scale. The pH, P, of a solution and its hydronium ion concentration in moles per liter, H, are related as follows: H = 10-PFind the formula for the rate of change 
.
A. 
= -(ln P)10-P
B. 
= (ln 10 )10-P
C. 
= - 
D. 
= -(ln 10 )10-P
Answer: D
Mathematics
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Find the equation of the line described, and express your answer in the specified form.Perpendicular to the line y = 5; passes through the point (8, 1); standard form
A. x = 1 B. y = 1 C. x = 8 D. y = 8
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Write the partial fraction decomposition of the rational expression.
A. 
+ 
+ 
B. 
+ 
+ 
C. 
+ 
+ 
D. 
+ 
+ 
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Subtract. Simplify, if possible.20
- 
A. 20
B. 18
C. 19
D. 19
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Graph the function.y = -cot x
A. 
B. 
C. 
D. 
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