Im so sad rn no freinds and bored out of my mind

Sandy is ordering bread rolls for her party,she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

Combine like terms to make a simpler expression 3z+z