Write the ratio as a ratio of whole numbers using fractional notation. Write the fraction in simplest form.42,000 copies to 14,000 copies
A. 
B. 
C. 
D. 
Answer: C
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Graph the values of x that satisfy the given conditions.-3 < x < 1
A. 
B. 
C. 
D. 
Solve the problem.Suppose a cost-benefit model is given by 
where C is the cost in thousands of dollars for removing p percent of a given pollutant. Find C(90) to the nearest dollar and interpret it.
A. $52,200; It will cost $52,200 to remove 90% of the pollutant. B. $5800; It will cost $5800 to remove 0.90% of the pollutant. C. $5220; It will cost $5220 to remove 0.90% of the pollutant. D. $9000; It will cost $9000 to remove 90% of the pollutant.
Simplify the expression.
A. 
B. 
C. 
D. 
Solve the problem.Suppose that the function y = f(x) is increasing on the interval (2, 8). Over what interval is the graph of 
increasing?
A. (2, 8) B. (-3, 3) C. (7, 13) D. (10, 40)