5 8/12 in the simplest form is 17/3
The function is f(x)=2x+10
Use the geometric mean for right triangles here. Like this

. Cross multiply to get

, and

. That simplifies down to

. Pull out the 9 as a perfect square of 3 and you're left with

, first choice above.
-3-24=-27, -3x-24=72
Answer is -3 and -24
I think you count the squares in the middle or radius ?