Help me plz don’t get it

You have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint? you have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

X+ y = 5 ; x - y =3 solve using linear combination