The marginal rate of technical substitution shows Question 10 options: A) how many workers can do the job of one computer, keeping output constant. B) the rate at which technology advances change marginal productivity. C) how many machines can be replaced by computers, keeping output constant. D) how many computers are needed to replace workers so that output can increase.

Wilson center is a private not-for-profit voluntary health and welfare entity. during 2017, it received unrestricted pledges of $638,000, 65 percent of which were payable in 2017, with the remainder payable in 2018 (for use in 2018). officials estimate that 14 percent of all pledges will be uncollectible. a. how much should wilson center report as contribution revenue for 2017? b. in addition, a local social worker, earning $20 per hour working for the state government, contributed 600 hours of time to wilson center at no charge. without these donated services, the organization would have hired an additional staff person. how should wilson center record the contributed service?