Many regions in North and South Carolina and Georgia have experienced rapid population growth over the last $10$ years. It is expected that the growth will continue over the next $10$ years. This has motivated many of the large grocery store chains to build new stores in the region. The Kelley's Super Grocery Stores Incorporated chain is no exception. The director of planning for Kelley's Super Grocery Stores wants to study adding more stores in this region. The director believes there are two main factors that indicate the amount families spend on groceries. The first is their income and the other is the number of people in the family. The director gathered the following sample information.

$\backslash$table$[[$Family$,$Food,Income,Size$],[1,5\mathrm{.}04,$$$73\mathrm{.}98,4],[2,4\mathrm{.}08,54\mathrm{.}90,2],[3,5\mathrm{.}76,94\mathrm{.}14,4],[4,3\mathrm{.}48,52\mathrm{.}02,1],[5,4\mathrm{.}20,65\mathrm{.}70,2],[6,4\mathrm{.}80,53\mathrm{.}64,4],[7,4\mathrm{.}32,79\mathrm{.}74,3],[8,5\mathrm{.}04,68\mathrm{.}58,4],[9,6\mathrm{.}12,165\mathrm{.}60,5],[10,3\mathrm{.}24,64\mathrm{.}80,1],[11,4\mathrm{.}80,138\mathrm{.}42,3],[12,3\mathrm{.}24,125\mathrm{.}82,1],[13,6\mathrm{.}60,77\mathrm{.}58,7],[14,4\mathrm{.}92,171\mathrm{.}36,2],[15,6\mathrm{.}60,82\mathrm{.}08,9],[16,5\mathrm{.}40,141\mathrm{.}30,3],[17,6\mathrm{.}00,36\mathrm{.}90,5],[18,5\mathrm{.}40,56\mathrm{.}88,4],[19,3\mathrm{.}36,71\mathrm{.}82,1],[20,4\mathrm{.}68,69\mathrm{.}48,3]]$

d$-1.$ Summarize the results of the regression equation without interaction by writing the equation. Note: Negative amount should be indicated by a minus sign. Round your answers to $4$ decimal places.

Answer is not complete.

Commissions

$+$

Calls

$+$

Miles

d$-2.$ Find the adjusted $R^2.$

Note: Round your answer to $2$ decimal places.

Answer is not complete.

$R^2$

$\%$