refer to the exhibit$3\mathrm{.}1$what formula should be entered in cell e$5$in the accompanying excel spreadsheet to compute total profit?

a$=$ b$4*$b$5+$c$4*$c$5$

b$=$SUMPRODUCT$($B$8$:C$8,$$B$$4$:$C$$4)$

C$=$SUM$($B$5$:C$5)$

D$=$SUM$($E$8$:E$10)$