Production-based accounting is used to estimate gdp by a. summing each firm's value added to the production process. b. adding up the incomes received by all the resources that contributed to production. c. computing for each firm the difference between sales revenue and the purchase of intermediate products, then summing this difference across all firms. d. all of the above. e. a and c only.

Required: 1-a. the marketing manager argues that a $5,000 increase in the monthly advertising budget would increase monthly sales by $9,000. calculate the increase or decrease in net operating income. 1-b. should the advertising budget be increased ? yes no hintsreferencesebook & resources hint #1 check my work 8.value: 1.00 pointsrequired information 2-a. refer to the original data. management is considering using higher-quality components that would increase the variable expense by $2 per unit. the marketing manager believes that the higher-quality product would increase sales by 10% per month. calculate the change in total contribution margin. 2-b. should the higher-quality components be used? yes no