Consider input-output model: input matrix: a= r 0.05 0.33 0.19 0.25 0.10 0.38 0.34 1 0.12 0 final-demand vector: d= r 1800 200 900 1) explain economic meaning of the elements 0.25, 0, and 900. (3 points) 2) explain the economic meaning of the second-column sum. (3 points) 3) write out the specific input-output matrix equation for this model. (2 points) 4) solve the model by any method. (8 points) 5) describe in words what your solution mean. (4 points) 6) write out comparative-static derivatives in the form of 7.23" on page 174 in the textbook. (2 points) 7) what does the partial derivative of xı with respect to d2 mean? (2 points)

James jones is the owner of a small retail business operated as a sole proprietorship. during 2017, his business recorded the following items of income and expense: revenue from inventory sales $ 147,000 cost of goods sold 33,500 business license tax 2,400 rent on retail space 42,000 supplies 15,000 wages paid to employees 22,000 payroll taxes 1,700 utilities 3,600 compute taxable income attributable to the sole proprietorship by completing schedule c to be included in james’s 2017 form 1040. compute self-employment tax payable on the earnings of james’s sole proprietorship by completing a 2017 schedule se, form 1040. assume your answers to parts a and b are the same for 2018. further assume that james's business is not a service business, and that it has $155,000 unadjusted basis in tangible depreciable property. calculate james's 2018 section 199a deduction.