Can someone answer this please

What is the size of the matrix resulting from

Complete the statements about the system of linear equation respresented by the tables the equation respented the left table is

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.