How to solve

Elmo Security Consultants $($ESC$)$ offer a standardized review of data security for small business owners. The following data apply to the provision of these reviews:

Required:Calculate the amount for each of the following $($one unit $=$ one review$)$ if the number of reviews is $2,500$ per month. Also calculate if the number of reviews decreases to $2,000$ per month.Note: Do not round intermediate calculations. Round your final answers to the nearest whole dollar.

$\backslash$table$[[,\backslash$table$[[2,500],[$Reviews$]],\backslash$table$[[2,000],[$Reviews$]]],[$a$.$ Variable review $($production$)$ cost per unit,$$,840,$$$,840],[$b$.$ Variable total cost per unit,$$,990(,$$$,990$

$1)$ Please answer the questions that were marked incorrectly.