Serenity Living manufactures gas fireplaces for home use. Each unit produced goes through a complex quality control process. The company has observed quality control costs as follows over the past 16 weeks:

WeekUnits

ProducedTotal

Quality Control

Costs124$540215$400330$620412$380518$480627$580720$500821$511917$4421019$4691122$5211229$6161326$5691414$3911516$4301628$602

For planning purposes, the company's management wants to know the amount of variable quality control costs per unit and the total fixed quality control costs per week.

Required:

1.Using the least-squares regression method, estimate the variable and fixed elements of the quality control cost.(Round the "variable cost" to 2 decimal places.)

2.If the company produces 20 gas fireplaces next week, what are the expected total quality control costs?(Round intermediate and final value to 2 decimal places.)