Elaina simplified the algebraic expression below. Hannah claimed that Elaina did not finish the process. Which answer shows the simplified expression that Hannah expected? 3 y squared + 9 y minus y squared + 9 minus 2 y minus 3 = (3 y squared minus y squared) + (9 y minus 2 y) + (9 minus 3) 2 y squared minus 7 y + 6 2 y squared + 7 y + 6 4 y squared minus 7 y + 6 4 y squared + 7 y + 6

Atoy manufacturer makes its own wind-up motors, which are then put into its toys. while the toy manufacturing process is continuous, the motors are intermittent flow. data on the manufacture of the motors appears below. annual demand (d) = 50,000 units daily subassembly production rate = 1,000setup cost (s) = $85 per batch daily subassembly usage rate = 200carrying cost = $.20 per unit per year(a) to minimize cost, how large should each batch of subassemblies be? (b) approximately how many days are required to produce a batch? (c) how long is a complete cycle? (d) what is the average inventory for this problem? (e) what is the total annual inventory cost (holding plus setup) of the optimal behavior in this problem?

Boone brothers remodels homes and replaces windows. ace builders constructs new homes. if boone brothers considers expanding into new home construction, it should evaluate the expansion project using which one of the following as the required return for the project?

Sales at a fast-food restaurant average $6,000 per day. the restaurant decided to introduce an advertising campaign to increase daily sales. to determine the effectiveness of the advertising campaign, a sample of 49 days of sales were taken. they found that the average daily sales were $6,300 per day. from past history, the restaurant knew that its population standard deviation is about $1,000. if the level of significance is 0.01, have sales increased as a result of the advertising campaign? multiple choicea)fail to reject the null hypothesis. b)reject the null hypothesis and conclude the mean is higher than $6,000 per day. c)reject the null hypothesis and conclude the mean is lower than $6,000 per day. d)reject the null hypothesis and conclude that the mean is equal to $6,000 per day. expert answer