Provide an appropriate response.Prove that the function f is not one-to-one.f(x) = x2 + 2
What will be an ideal response?
Answers may vary. Possible answer:
Find two numbers a and b for which a ? b and f(a) = f(b). Two such numbers are -1 and 1 because f(-1) = f(1) = 3. Thus, f is not one-to-one.
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Solve.Cindy wants to secure sequins on a piece of felt shaped like a trapezoid with a height of 
and bases of 
and 
What is the cost of all the sequins if sequins cost 
per cm2 of coverage?
A. $149.60 B. $44.80 C. $36.00 D. $173.60
As part of a study on the metabolism of athletes, 400 college basketball players are randomly chosen and their weights taken. The distribution of the weights is approximately normal. The average weight is 215 pounds and the standard deviation is 15 pounds.A weight of 260 pounds corresponds to a standardized value of
A. 1. B. 2. C. 3. D. 4. E. none of these
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.
Translate the problem to a system of equations, then solve using Cramer's Rule.During the 2001-2002 Little League season, the Tigers played 62 games. They won 18 more games than they lost. How many games did they lose that season?
A. 40 games B. 20 games C. 25 games D. 22 games