Express as a single logarithm and, if possible, simplify.ln (x2 - 4) - ln (x + 2)
A. ln (x - 2)
B. ln (x2 - 2)
C. ln (x + 2)
D. ln (x - 4)
Answer: A
Mathematics
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Solve the inequality. Write the solution set in interval notation.x2 - 7x + 12 ? 0
A. [4, ?) B. (-?, 3] ? [4, ?) C. [3, 4] D. (-?, 3]
Mathematics
Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.ln (x - 5) - ln (x + 7) = ln (x - 6) - ln (x + 1)
A. ?
B. 
C. 
D. 
Mathematics
Find the y-intercept and any x-intercepts.y = -3x2 - 4x + 2
A. y-intercept (0, 2), x-intercepts 
and 
B. y-intercept (0, 2), no x-intercepts
C. y-intercept (0, 2), x-intercepts 
and 
D. y-intercept (0, 2), x-intercepts 
and 
Mathematics
Find the sample standard deviation from the set of measurements below.
A. 
B. 
C. 
D. 
E. 
Mathematics