$(30$pt$)$ Should the firm contract for maintenance on their printers?

$\backslash$table$[[\backslash$table$[[$Number of$],[$breakdowns$]],\backslash$table$[[$Number of months$],[$that breakdowns$],[$occurred$]]],[0,2],[1,8],[2,6],[3,4],[,$Total: $20]]$

Average cost of breakdown $=$$$300$

Cost of preventive maintenance service contract $=150\frac{\text{\$}}{?}$ month

Expected Breakdown after Service contract $=1$ per month