please answer both questions

Kim K asks you to develop a demand forecast for her perfume line. Using the data provided, you find a regression model y=4- 3.36X1 +2.84x2, with the undernoted parameters, Parameters: R2088 Sig of R: 0.04 p-value of x10.05 p-value of x2*0.04 X4 denotes Selling price *2 denotes Advertising y denotes Demand Kim asks you the following question - please answer her. Would a unit increase in advertising (x2) result in an increase of 2.84 units in Demand ty? a. Yes, because for a unit increase in x2, y increases by 2.84 units, provided X1 is kept constant b. Yes, because for a 3.36 units increase in y, xz increases by 1 unit No, because for a unit increase in y. x increases by 3.36 units Yes, because for a unit increase in x2, y increases by 284 units on average, provided xj is kept constant d "During the three hours of the morning rush from 7am to 10 am. 150 customers per hour arrive at the coffee shop. The coffee shop has a capacky of 130 customers per hour. On average how long does a customer arriving at Sam morning rush wait to be served 1.15 hours 10.26 min 15 min 18.46 min