Solve the problem.pH = -log10[H+] Find the pH if the [H+] = 1.3 x 10-5.
A. 5.89
B. 4.11
C. 5.11
D. 4.89
Answer: D
Mathematics
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Using the curve-sketching guide, select the graph of the function.
?
?
A. ?
B. ?
C. ?
Mathematics
Find a formula for the inverse of the function described below.An organization determines that the cost per person of chartering a bus is given by the formula 
where x is the number of people in the group, and C(x) is in dollars.
A. C-1(x) = 
B. C-1(x) = 
C. C-1(x) = 
D. C-1(x) = 
Mathematics
Evaluate.
A. 840 B. 120 C. 12 D. 84
Mathematics
Find the x-intercepts.f(x) = 2x2 - 2x - 144
A. x-intercepts (9, 0) and (8, 0) B. x-intercepts (-9, 0) and (-8, 0) C. x-intercepts (-9, 0) and (8, 0) D. x-intercepts (9, 0) and (-8, 0)
Mathematics