The accompanying bar graph shows the percentage of adults in a certain city who

Question

The accompanying bar graph shows the percentage of adults in a certain city who smoked cigarettes for selected years from 1970 through 2010.

The accompanying bar graph shows the percentage of adults in a certain city who smoked cigarettes for selected years from 1970 through 2010 The mathematical model p+228 describes the percentage, p, of adults who smoked cigarettes x years after 1970. Use this information to answer questions (a) and (b) below 25% 26% 18% year (a) Does the mathematical model underestimate or overestimate the percentage of aduls who smoked cigarettes in 2010? By how much? Select the correct choice below and fill in the corresponding answer box to complete your choice. OA. The model underestimates the actual value by % B. The model overestimates the actual value by|1%.

Explanation / Answer

according to mathematical model

p + x/2 = 28

plugging x = 40

p + 40/2 = 28

p + 20 = 28

p = 2

and according to bar graph the percentage in 2010 = 5%

so , the model underestimates the actual value by 3%

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