Write the rational expression in lowest terms.
A. 
B. 2
C. 
D. 1
Answer: C
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Rewrite the expression in terms of exponentials and simplify the results.cosh 7x + sinh 7x
A. 7x B. e7x C. e7x - e-7x D. 2e7x
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. $320,000; f(320,000) = 800 B. $360,000; f(800) = 360,000 C. $360,000; f(360,000) = 800 D. $320,000; f(800) = 320,000
Perform the indicated operation.Subtract (12x + 3) from (-5x2 - 6x + 3).
A. -5x2 + 6x + 6 B. -5x2 - 18x C. 5x2 + 18x D. -5x2 - 18x - 6
Solve the problem.A hotel manager predicted an average occupancy rate of 
during the slow season. The occupancy rate turned out to be 0.72. Was the manager better off or worse off than he expected to be?
A. Better off B. Worse off