Trigonometry, I also need help with this, 66 points because why not?

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32

Select all the statements that apply to this figure