Four balls of wool will make 8 knitted caps. how many balls of wool will malcom need if he wants to make 6 caps?

Ineed i been stuck on this question since yesterday

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

36x2 + 49y2 = 1,764 the foci are located at: (-√13, 0) and (√13,0) (0, -√13) and (0,√13) (-1, 0) and (1, 0)edit: the answer is (- the square root of 13, 0) and (the square root of 13, 0)