The mean of six numbers is 25. Three of the numbers are 15, 15, and 30. The second unknown number is twice the first unknown number, and third unknown number is twice the sum of the first two unknown numbers.
Find the unknown numbers.

The first unknown number is 10

The second unknown number is 20

The third unknown number is 60

Step-by-step explanation:

15 + 15 + 30 + 10 + 20 + 60 = 150

150/6 = 25

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

(picture explains)

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).