The logistic growth function upper p left parenthesis x right parenthesis equals startfraction 90 over 1 plus 271 e superscript negative 0.122 x endfraction p(x)= 90 1+271e−0.122x models the percentage, p(x), of americans who are x years old and have some coronary heart disease. use this function to find the the percentage of 66 66-year olds who have some coronary heart disease.

about 83%

Put the given value in the formula and do the arithmetic.

... P(66) = 90/(1 +271·e^(-0.122·66))

... = 90/(1 +271·e^-8.052)

... = 90/(1 +271·0.00031846)

... = 90/(1 +0.0863)

... = 90/1.0863

... = 82.8 . . . . percentage with some coronary heart disease

answer: 800

step-by-step explanation:

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation: