Solve the problem.The hydrogen potential, pH, of a substance is defined by 
where [H+] is measured in moles per liter. Find the pH of a sample of lake water whose [H+] is 3.05 x 10-9 moles per liter.
A. 7.3
B. 10.1
C. 8.5
D. 6.4
Answer: C
Mathematics
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Graph the linear function.f(x) = 5
A. 
B. 
C. 
D. 
Mathematics
One solution of a polynomial equation is given. Use synthetic division to find any remaining solutions.4x3 + 5x2 - 23x - 6 = 0; -3
A. 3, -2, 1
B. 2, - 
C. -2, 
D. 2, -1
Mathematics
Graph the given absolute value function and state its domain and range.f(x) = -
- 5
A. Domain: (-?, ?)
Range: (-?, -5]
B. Domain: (-?, ?)
Range: (-?, -5]
C. Domain: (-?, ?)
Range: [-5, ?)
D. Domain: [2, ?)
Range: [-5, ?)
Mathematics
Suppose that you toss a coin and roll a die. The sample space is shown in Figure. What is the probability of obtaining tails?
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics