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 1990?
A) x-min = 0, x-max = 100 Y-min = 0, y-max = 60
B) x-min = -100, x-max = 0 Y-min = 0, y-max = 70
C) x-min = -100 , x-max = 100 Y-min = 0, y-max = 50
D) x-min = 0, x-max = 70 Y-min = 0, y-max = 50
E) x-min = 0, x-max = 100 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 1990? ​
A) x-min = 0, x-max = 100 Y-min = 0, y-max = 60 
B) x-min = -100, x-max = 0 Y-min = 0, y-max = 70 
C) x-min = -100 , x-max = 100 Y-min = 0, y-max = 50 
D) x-min = 0, x-max = 70 Y-min = 0, y-max = 50 
E) x-min = 0, x-max = 100 Y-min = 0, y-max = 70

Quizplus · Accepted Answer

The years 1890 to 1990 would require 100 years of data, so the x-values need to range from 0 (1890) to 100 (1990). The equation models the percent in the labor force, which can range from 0% to 100%, so the y-values need to range from 0 to 70. Choice E satisfies both of these conditions.

The Percent P of Men 65 Years of Age or Older