The percentage of an adult population that smokes can be modeled by the function P(x)whose graph
Is shown below. The input x is years after 1955. In what years was the percentage of nonsmokers less than
60?
A)0 - 60
B)1955 - 2015
C)1955-1970
D)1955 - 1965

Question

The percentage of an adult population that smokes can be modeled by the function P(x)whose graph
Is shown below. The input x is years after 1955. In what years was the percentage of nonsmokers less than
60? 
A)0 - 60 
B)1955 - 2015 
C)1955-1970 
D)1955 - 1965

Quizplus · Accepted Answer

The graph shows that the percentage of nonsmokers dips below 60 in the early years of the graph, between x=0 and x=10. Looking at the years after 1955, this corresponds to the years 1955-1965. Therefore, the correct answer is D) 1955-1965. Looking at the graph, we can see that the percentage of nonsmokers is less than 60% between 1955 and 1965. Therefore, the answer is D, 1955-1965.

The Percentage of an Adult Population That Smokes Can Be