Photo Equipment Store Earnings
the Quarterly Earnings of a Chain

Photo Equipment Store Earnings
The quarterly earnings of a chain of Photo Equipment stores have been recorded for the years 2011-2014.These data (in millions of dollars)are shown in the accompanying table.
$$\begin{array}{l}\text { Year }\\\begin{array} { | c | c c c c | } \hline \text { Quarter } & 2011 & 2012 & 2013 & 2014 \\\hline 1 & 65 & 70 & 73 & 79 \\2 & 80 & 88 & 90 & 95 \\3 & 98 & 103 & 107 & 111 \\4 & 67 & 74 & 76 & 80 \\\hline\end{array}\end{array}$$
-A local newspaper that appears six days per week wanted to forecast two-day revenues from its business services classified ads section.The revenues (in $1,000s)were recorded for the past 52 weeks.From these data,the following regression equation was computed: $\tilde { y } _ { t }$ = 2000 + 0.6t- 150D₁ -40D₂ (t = 1,2,3,... ,156)
where $D _ { 2 } = \left\{ \begin{array} { l } 1 \text { if Monday or Tuesday } \\0 \text { otherwise }\end{array} \right.$ and $D _ { 2 } = \left\{ \begin{array} { l } 1 \text { if Wednesday or Thursday } \\0 \text { otherwise }\end{array} \right.$ Forecast the two-day revenues for the next week.