A door-to-door salesperson knocks on Mary's door and convinces her to purchase the Wonder Vacuum for $500. Soon after the salesperson leaves, Mary begins to have second thoughts about the transaction. Which statement about the situation is correct?a. Mary agreed to purchase the vacuum, so she must honor the agreement. b. Mary must pay for the vacuum, but she can get a refund if she returns it to the manufacturer within 30 days. c. Mary can keep the vacuum without paying when it is delivered, as it was purchased in her home. d. Mary can cancel the transaction at any time before midnight of the third business day thereafter.

Peyton taylor drew a map with scale 1 cm to 10 miles. on his map, the distance between silver city and golden canyon is 3.75 cm. what is the actual distance between silver city and golden canyon?

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

The following table gives the map coordinates and the shipping loads for a set of cities that we wish to connect through a central hub.,(7,(4,(7,(6,(2,( 2,) for the location of the proposed new central hub, the coordinates should be near: x==) if the shipments from city a double, for the location of the proposed new central hub, the coordinates should be near: x==.926.865.017.21