Simplify. Write answers without negative exponents. Assume that all variables represent nonzero real numbers.
-4
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find the derivative of the function.y = log (8x)
A. 
B. 
C. 
D. 
Mathematics
Multiply.
A. 385 B. 275 C. 278 D. 285
Mathematics
Find the exact value of the expression.
A. - 
B. - 
C. -2
D. -
Mathematics
The chemical acidity of a solution is measured in units of pH: 
where 
is the hydrogen ion concentration in the solution. If a sample of rain has a pH of 3.2, how many times higher is its 
than pure water's, which has a pH of 7?
a. 
b. 
c. 
d. 
e. 7
Mathematics