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.log9 (x2 - 8x) = 1
A. {9}
B. {1}
C. {-9, 1}
D. {9, -1}
Answer: D
Mathematics
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Use Taylor series to evaluate the limit.
x2
A. -10 B. 10 C. 1 D. -1
Mathematics
Solve the problem.A wheel with radius 3 m rolls at 20 rad/s. How fast is a point on the rim of the wheel rising when the point is 
radians above the horizontal (and rising)? (Round your answer to one decimal place.)
A. 120.0 m/s B. 60.0 m/s C. 15.0 m/s D. 30.0 m/s
Mathematics
Determine whether the given ordered pair is a solution to the system of equations.(-1, -1)3x + y = -22x + 3y = 1
A. Yes B. No
Mathematics
Subtract. Simplify, if possible.5
- 
A. 13
B. 11
C. 12
D. 13
Mathematics