Using High$-$Low to Calculate Predicted Total Variable Cost and Total Cost for a Time Period that Differs from the Data Period

Pizza Vesuvio makes specialty pizzas. Data for the past $8$ months were collected:

$\backslash$table$[[$Month$,$Labor Cost,Employee Hours$],[$Janu$$ry$,$$$7,000,430],[$February$,9,899,620],[$March$,8,140,710],[$April$,9,787,680],[$May$,8,490,550],[$June$,7,531,420],[$July$,9,490,640],[$August$,7,450,380]]$

Assume that this information was used to construct the following formula for monthly labor cost.

Total Labor Cost Employee Hours