A University Radio Station Has Been Airing a Public Service

A university radio station has been airing a public service announcement (PSA)that gives a telephone number students can call to get information on upcoming campus events.In order to determine the optimal number of times per day to run the PSA,the station has been counting the number of calls generated each day as a function of the number of times the PSA was aired.The results of the experiment are summarized in the table below. $\begin{array}{|l|l|l|l|}\hline \text { number of}&\text {number of }&\text {number of }&\text {number of }\\\text { airings}&\text {calls per }&\text {airings }&\text { cakks per}\\\text { Per dat}&\text { dat}&\text { per day}&\text { day}\\\hline 1 & 59 & 9 & 145 \\\hline 2 & 58 & 10 & 157 \\\hline 3 & 80 & 11 & 184 \\\hline 4 & 91 & 12 & 185 \\\hline 5 & 98 & 13 & 190 \\\hline 6 & 134 & 14 & 186 \\\hline 7 & 132 & 15 & 197 \\\hline 8 & 147 & 16 & 209\\\hline\end{array}$ Re-express the data by squaring the number of calls per day,then plot the re-expressed data as a scatterplot.