${(}^{****})$ Consider the following partially completed sales and operations plan. Using the planning values and filled$-$in values as a guide, complete the plan and calculate the layoff, hiring, and inventory costs. Does this sales and operations plan reflect a chase, level, or mixed strategy? Explain.

LAYOFF

HIRING

INVENTORY

$\backslash$table$[[$Totals$,],[$Costs$,],[$Cost of plan,$],[$Planning values,$500],[$Starting inventory,$50],[$Starting and ending workforce,$160],[$Hours worked per month per,$],[$worker$,$$$300$