Chem-Tex Chemical is considering two additives for improving the dry-weather stability of its low- cost acrylic paint. Additive A has a first cost of $110,000 and an annual operating cost of $60,000. Additive B has a first cost of $175,000 and an an- nual operating cost of $35,000. If the company uses a 3-year recovery period for paint products and a MARR of 20% per year, which process is economically favored? Use an incremental ROR analysis.

Boston Electric Generators has been getting many complaints from its major​ customer, Home​ Station, about the quality of its shipments of home generators. Daniel​ Shimshak, the plant​ manager, is alarmed that a customer is providing him with the only information the company has on shipment quality. He decides to collect information on defective shipments through a form he has asked his drivers to complete on arrival at​ customers' stores. The forms for the first 287 shipments have been turned in. They show the following over the past 8​ weeks:   Week No. of Shipments No. of Shipments with Defects 1 23 10 2 31 11 3 32 12 4 39 13 5 35 12 6 40 14 7 41 14 8 46 17   This exercise contains only part a.   ​a) Using the point drawing tool eight​ times, develop a scatter diagram using total number of shipments and number of defective shipments. Part 2

Air flows through the mitered bend shown in the figure below at a rate of 0.5m³/s. To help straighten the flow after the bend, a set of 6- mm-diameter drinking straws is placed in the pipe as shown. Estimate the extra pressure drop between points (1) and (2) caused by these straws. CCCC Answer: Tightly packed 6 mm diameter, 30 cm long straws (2) 30 cm kPa

The following is an excerpt from a conversation between two sales clerks, Tracy Rawlin and Jeff Weimer. Both Tracy and Jeff are employed by Magnum Electronics, a locally owned and operated electronics retail store. Suggest appropriate control procedures that would have prevented or detected the theft of cash.