Eight years ago. ohio valley trucking purchased a large capacity dump truck for $115.000 to provide short-haul earthmoving services. the company sold a today for $45,000 operating and maintenance costs averaged $10, 500 per year. a complete overhaul at the end of year 4 cost an extra $3600. calculate the annual cost of the truck at 8% per year interest.
a. 25741
b. 26741
c. 27741
d. 28741

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