Perform the indicated operation and, if possible, simplify.
? 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Solve the problem.After a new firm starts in business, it finds that its rate of profits (in hundreds of dollars per year) after t years of operation is given by 
Find the profit in year 3 of the operation.
A. $3,600 B. $6,000 C. $5,400 D. $4,800
Mathematics
List the critical values of the related function. Then solve the inequality.
? 
A. No critical values; ? B. 2; [2, ?) C. 1; (-?, 1] D. No critical values; (-?, ?)
Mathematics
Compare the fractions.
, 
, 
, 
A. 
< 
< 
< 
B. 
< 
< 
< 
C. 
< 
< 
< 
D. 
< 
< 
< 
Mathematics
Solve the system of equations using substitution. Note that the system may be inconsistent or consistent with dependent equations.
A. (2, 1) B. (1, -2) C. (1, 2) D. (1, 4)
Mathematics