Can someone help me with this

What is the missing step in this proof ?

Alana has 12.5 cups of flour with which she is baking four loaves of raisin bread and one large pretzel. the pretzel requires 2.5 cups of flour to make. how much flour is in each loaf of raisin bread? explain the steps to follow to get the answer.

Binh says the point of intersections is (0,-3) which statements identify the errors binh made , check all that apply