Solve.The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by 
where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the pH if the hydrogen ion concentration is 
A. 10.14
B. 9.86
C. 10.86
D. 9.14
Answer: D
Mathematics
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By calculating an appropriate number of terms, determine if the series converges or diverges. If it converges, find the limit L and the smallest integer N such that 
for 
otherwise indicate divergence.an = 
A. L = 
, N = 8
B. L = 
, N = 6
C. L = 0, N = 5
D. diverges
Mathematics
Rationalize the numerator of the fraction.
A. 
B. 
C. 
D. 
Mathematics
The financial breakeven point is the level of _____ at which earnings per share (EPS) is equal to zero.
A. net operating income (NOI) B. retained earnings C. taxes D. net income E. interest payments
Mathematics
Evaluate.(-5)2
A. 10 B. -25 C. 25 D. -10
Mathematics