Can you explain me this one

variable cost per unit times the number of units sold. the change in revenue when one additional worker is hired. what economists assume firms seek to maximize. Suppose that the price of a coffee table is $85/table. Jim-Bob will sell 100 coffee tables at the flea market this month. It costs Jim-Bob $50 in materials and supplies to make each coffee table and $150/month to rent space at the flea market. These are all of Jim-Bob's costs. How much will Jim-Bob make in total revenue this month? Do not round your answer. 8500 O 8:38 A W 39 F Cloudy *O () ENG 25/11/2