In this example, what's wrong with the formula in cell B$5?*$

$2$ points

$\backslash$table$[[,$A$,$B$],[1,$Item,Price$],[2,$Soda,$$1\mathrm{.}99],[3,14"$ pizza,$$13\mathrm{.}89],[4,$Breadsticks,$$3\mathrm{.}29],[5,$Tip,B $B2+B3+B4**0\mathrm{.}2$