Use the following sales history to calculate the popularity index for Oct. $5($Friday$).$

Sales History $-$ Portions Sold

For the Period Oct $1-7$

Forecast the portion sales for next Friday, Oct. $12.$

a$.$ If we assume the market and weather condition will be the same as this week, which of the following

will be a better forecast for next Friday's portion sales? This Friday's portion sales or the average of this

week's portion sales?

b$.$ There will be a trade show on Oct. $12.$ The sales usually increase by $10\%$ during a trade show period.

What is the adjusted forecast of total portion sales for Oct. $12?$ Round your answer to nearest integer.

c$.$ What is the portion forecast of each menu items on Oct. $12$ using the popularity index based on Oct. $5?.$

Write your answers in the Portion Forecast column. Round your answer to nearest integer.

d$.$ A tradeshow attendee phoned in and ordered $3$ pork ribs for take$-$outs on Oct. $12.$ No information for

other menu items. What are the adjusted portion forecasts on Oct. $12?$ Write your answers in the

Adiusted Portion Forecast column