The Weber Company has assembled the following data pertaining to certain costs that cannot be easily identified as either fixed or variable. Weber has heard about a method of

measuring cost functions called the high$-$low method and has decided to use it in this situation.

$($Click the icon to view the assembled data.$)$

Read the requirements.

Requirement a$.$ What is the slope coefficient?

The slope coefficient is

Data table

$\backslash$table$[[$Month$,$Cost,Hours$],[$January $$$,39,000,3,500],[$February$,37,500,2,900],[$March$,35,280,3,200],[$April$,37,000,3,400],[$May$,69,000,6,050],[$June$,44,000,4,150]]$Requirements

a$.$ What is the slope coefficient?

b$.$ What is the constant for the estimated cost equation?

c$.$ What is the estimated cost function for the above data?

d$.$ What is the estimated total cost at an operating level of $3,000$ hours?