As an inventory manager, you are using a mathematical model to organize warehouse sections. A part of the sectioning formula involves the expression $y^2 + 4y - 7y - 28$. To streamline the layout, you need to factor this expression by grouping. Once you have verified that there is no greatest common factor (GCF) for all four terms, what is the first procedural step you must recall to continue factoring by grouping?

A logistics analyst is optimizing a warehouse layout using a formula that includes the expression $y^2 + 4y - 7y - 28$. To simplify the formula, the analyst needs to factor this expression. Arrange the following steps in the correct chronological order to complete the factorization.

As a quality analyst reviewing a standard operating procedure for algebraic modeling, you must verify the components of the factorization for the expression $y^2 + 4y - 7y - 28$ by grouping. Match each part of the factoring process to its corresponding mathematical expression.

Factoring Procedure in Warehouse Optimization

A logistics analyst is using the expression $y^2 + 4y - 7y - 28$ to model the space required for a new warehouse layout. To factor the expression by grouping, the analyst first factors out $y$ from the first group $(y^2 + 4y)$, leaving $y(y + 4)$. To correctly complete the grouping and ensure the binomial factors match, the analyst must factor out the value ____ from the second group $(-7y - 28)$.