Evaluate the expression for the given value of x.
?
A. 0
B. -5
C. 5
D. 15
E. -15
Answer: B
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Find the exact value of the logarithmic expression.ln e9
A. 
B. 1
C. 9
D. e
Find all positive and negative integers b such that the trinomial is factorable.x2 + bx - 2; b = ?
A. 3 B. ±1 C. ±3 D. 1
Perform the indicated operation. Simplify, if possible.
+ 
A. 
B. 
C. 
D. 
Perform the sequence of row operations on the matrix. What did the operations accomplish?
?
?
Add -4 times R1 to R2,
Add -1 times R1 to R3,
Add -2 times R2 to R3,
Add -1 times R2 to R1.
?
A. 
The operations produce a row-equivalent matrix in reduced row-echelon form.
B.
The operations produce a row-equivalent matrix in reduced row-echelon form.
C.
The operations produce a row-equivalent matrix in reduced row-echelon form.
D.
The operations produce a row-equivalent matrix in reduced row-echelon form.
E.
The operations produce a row-equivalent matrix in reduced row-echelon form.