Perform the indicated row operations on the following matrix. 
(-2)R1 + R2 ? R2
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Write the expression as the logarithm of a single quantity.ln (x + 10) - 2 ln x
A. ln 
B. ln [x2(x + 10)]
C. ln [(x + 10) - x2]
D. ln 
Mathematics
Simplify the expression by combining like terms.-2(4r + 10) + 2(6r + 3)
A. 2r + 8 B. 4r - 14 C. 4r + 10 D. -28r
Mathematics
Graph the line.f(x) = 
x + 3
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The mathematical model 
represents the cost in dollars a company has in producing x items during a month. Based on this, how much does it cost to produce 
? Interpret the question and answer using function notation.
A. $140,000; f(200) = 140,000 B. $240,000; f(240,000) = 200 C. $240,000; f(200) = 240,000 D. $140,000; f(140,000) = 200
Mathematics