E$9-8($Algo$)$ Calculating Direct Materials Variances $[$LO $9-3]$

Parker Plastic, Incorporated, manufactures plastic mats to use with rolling office chairs. Its standard cost information for last year follows:

$\backslash$table$[[,$Standard Quantity,Standard Price $($Rate$),$Standard Unit Cost$],[$Direct materials $($plastic$),9$ square foot,$ $1\mathrm{.}08,$per square foot,$$9\mathrm{.}72$