Please help I am so confused

11: -4 and 12: 300    C then A

Step-by-step explanation:

As the x's increase by 5, y decreases by 20

-20 divided by 5 is -4. This means y decreases by 4 for every x increase (by one).

A y- intercept is when x equals 0. And if you finish the chart following the -20 y units per 5 x units, you get your answer

0x 300y

5x 280y

10x 260y

15x 240y

20x 220y

25x 200y

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.