Researchers have found that after 25 years of age the average size of the pupil in a
person's eye decreases. The relationship between pupil diameter d (in millimeters)and age a (in years) can be modeled by
d=-2.1158 loge a+13.669 What is the average diameter of a pupil for a person 25 years old? 50 years old? Explain how you got your
answer.

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

what

i think the answer is true

step-by-step explanation: