Emily Smith is an event planner providing wedding consulting to elaborate weddings in Wichita. She would like to understand the cost structure of the company and has provided the following records of her activity and costs incurred. She thinks that number of weddings is the best driver of cost$.$

$\backslash$table$[[$Month$,$Weddings,Costs incurred$],[$March$,4,8,800],[$April$,5,9,700],[$May$,8,10,400],[$June$,20,27,000],[$July$,18,25,000],[$August$,16,23,000],[$September$,12,13,000],[$October$,10,12,000]]$