98 ! (urgent)

use the graph below to answer the question that follows:

what is the rate of change between the interval x = 0 and x = π?

a. -pi/4

b. -4/pi

c. -pi/6

d. -6/pi

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price