[tex]\begin{gathered} \text{November increased 7\%} \\ \text{7\%=0.07} \\ \text{Price = }66.14(1+0.07) \\ \text{Price = }66.14(1.07) \\ \text{Price =}70.77 \\ \text{The price in november is \$70.77} \\ \text{Dicember decreased 7\%} \\ \text{Price = }70.77(1-0.07) \\ \text{Price = }70.77(0.93) \\ \text{Price = }65.82 \\ \text{The price in dicember is \$65.82} \end{gathered}[/tex]
