Sorry, this was the answer to the wrong question, I'm very sorry for the inconvenience.
(-1,1) (6,9)
distance = root (x1-x2)²+(y1-y2)²
so root (-1-6)²+(1-9)²= root 113 or 10.6 ≈11
the answer is B. 11.18 units
80/60 = (80 + 2x)/(60 + 27)
80/60 = (80 + 2x)/87
4/3 = (80 + 2x)/87
3 . (80 + 2x) = 4 . 87
240 + 6x = 348
6x = 348 - 240
6x = 108
x = 18
Ab + bc = ba + bc = b( a + c )
