Whoever answers first will get 30 coins and a glow up. A bird flies south. Its distance from its nest, as a function of time, is modeled by y= 20x + 1.
Which statement best describes the function?
O A. Not enough information is given to decide.
O B. The function is linear at some points and nonlinear at other points.
O C. The function is nonlinear.
O D. The function is linear.

D It’s linear

Step-by-step explanation:  A P E X

x = central angle apc = measure of minor arc ac

the two angles x and 30 add to 180, so x+30 = 180 and x = 180-30 = 150. the measure of minor arc ac is 150 degrees.

what we need to do from here is find the circumference and then multiply it by x/360 since there are 360 degrees in a circle. in this case, x = 150, so x/360 = 150/360 = 15/36 = 5/12. the shortest distance along the curve from a to c is 5/12 of the distance around the entire circle (aka circumference)

c = circumference

c = pi*d

c = pi*24

c = 24pi

now multiply this by 5/12 to get

distance along minor arc ac = (5/12)*(circumference)

distance along minor arc ac = (5/12)*(24pi)

distance along minor arc ac = 10pi

the formula you can use is

l = (x/360)*pi*d

with

l = length of minor arc

x = central angle

d = diameter

which essentially is the steps we took though a bit differently.