Question

A store charges 7% sales tax. Which expression can be used to find the total cost of an item with a price of p?

Answer 1

`\begin{array}c \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{7\% of p}}{\left( \cfrac{7}{100} \right)p}\implies 0.07p~\hfill \stackrel{\textit{total price}}{p+\underset{tax}{0.07p}}`

Answer 2

p + 0.07p = total cost