Solve using matrices.2x - y + 7z = 577x + 7z = 70 8y + z = 73
A. (1, 9, 8)
B. (8, 9, 1)
C. (-1, 8, 2)
D. (1, 8, 9)
Answer: D
Mathematics
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Find x.
log6 x = log6 13
A. x = 26
B. x = 
C. x = 
D. x = 169
Mathematics
Find the derivative of y with respect to x, t, or ?, as appropriate.y = (x2 - 2x + 8) ex
A. (x2 + 4x + 6) ex
B. 
ex
C. (x2 + 6) ex
D. (2x - 2) ex
Mathematics
Evaluate the expression without using a calculator.log12
A. 
B. 1
C. 
D. 12
Mathematics
Find the specified domain.For f(x) = 2x - 5 and g(x) = 
, what is the domain of (f ? g)?
A. [0, ?) B. (-10, 10) C. [10, ?) D. [-10, ?)
Mathematics