Express as a sum of logarithms.ln 9x
A. ln 9x + ln x
B. ln 9 + ln x
C. ln(9 + x)
D. ln 9 - ln x
Answer: B
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Solve the problem.Given a group of students: G = {Allen, Brenda, Chad, Dorothy, Eric, Frances, Gale}, count the number of different ways of choosing 4 people for a committee. Assume no one can hold more than one office and that each person is to hold a different position on the committee.
A. 2401 B. 5040 C. 840 D. 35
Solve the system of equations by determinants.6x + 6y = -125x + y = -22
A. x = -5, y = 3 B. x = 3, y = -5 C. x = 5, y = -3 D. x = -3, y = -5
Factor.9x2 - 25
A. (3x + 5)(3x - 5) B. (3x + 5)2 C. (3x - 5)2 D. 9x2 - 25
Use the graph of f to determine the intervals where f is increasing and where f is decreasing.
A. increasing: [2, ?); decreasing: (-?, 2] B. increasing: (-?, 1] ? [2, ?); decreasing: [1, 2] C. increasing: [0, 3]; decreasing: (-?, 0] ? [3, ?) D. increasing: [0, ?); decreasing: (-?, 0]