The percent P of men 65 years of age or older in the labor force can be modeled by , where x is the number of years past 1890 (Source: U.S. Bureau of the Census). Plot this function using a graphing utility. What range of x-values and y-values do you need to use to view this graph for the years 1890 to 2010?
A)x-min = 0, x-max = 120 y-min = 0, y-max = 60
B)x-min = -120, x-max = 0 y-min = 0, y-max = 70
C)x-min = -120 , x-max = 120 y-min = 0, y-max = 50
D)x-min = 0, x-max = 90 y-min = 0, y-max = 50
E)x-min = 0, x-max = 120 y-min = 0, y-max = 70

Question

The percent P of men 65 years of age or older in the labor force can be modeled by  , where x is the number of years past 1890 (Source: U.S. Bureau of the Census). Plot this function using a graphing utility. What range of x-values and y-values do you need to use to view this graph for the years 1890 to 2010? ​
A)x-min = 0, x-max = 120 y-min = 0, y-max = 60 
B)x-min = -120, x-max = 0 y-min = 0, y-max = 70 
C)x-min = -120 , x-max = 120 y-min = 0, y-max = 50 
D)x-min = 0, x-max = 90 y-min = 0, y-max = 50 
E)x-min = 0, x-max = 120 y-min = 0, y-max = 70

Quizplus · Accepted Answer

The function models the years past 1890, so the x-min value should be 0 to start at 1890. The oldest age group mentioned is 65+ years old, so the y-max value should be at least 65. However, the function never reaches 65, so a y-max value of 70 will suffice. Therefore, the correct range of values is x-min = 0, x-max = 120 and y-min = 0, y-max = 70. Choice E is the only option that matches these criteria.

The Percent P of Men 65 Years of Age or Older