90
The logistic growth function P(x) = -
models the percentage, P(x), of Americans who are x years old and have some coronary heart disease. Use this
function to find the age at which the percentage of Americans who have some coronary heart disease is 61%.
1+271e-0.122x
What is the age at which 61% of Americans have some coronary heart isease?
years old (Round to the nearest integer.)