A baker needs 3/5 cups of water for every 1/2 cups of flour, how much flour is needed 1/3 cups of water?

Pls , the question is in the picture!

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)