If the goal is to cut the total amount of smoke in half in the neighborhood, what isthe cost-effective way to do this?

In its 2016 annual report, caterpillar inc. reported the following (in millions): 2016 2015 sales $38,537 $47,011 cost of goods sold 28,309 33,546 as a percentage of sales, did caterpillar's gross profit increase or decrease during 2016? select one: a. gross profit increased from 26.8% to 28.6% b. gross profit decreased from 28.6% to 26.5% c. gross profit increased from 71.4% to 73.2% d. gross profit decreased from 73.2% to 71.4% e. there is not enough information to answer the question.

Arival company manufactures fuel tanks for cars using a different production technique. the total weekly cost (in dollars) of producing x tanks is given by c(x) = 10000 +90x - 0.04x2 find the marginal cost at a production level of 500 fuel tanks per week to approximate the cost of the 501st unit (round to the nearest 2 decimal places, if needed)

During the current year, luis university received a $50,000 gift from an alumna who specified that it must be used to pay travel costs for faculty to attend health care conferences in foreign countries. during the year the university spent $8,000 to support travel to a health care conference in italy. the $8,000 disbursement will cause a net decrease in which class of net assets?