Two months ago, the price, in dollars, of a cell phone was c. 1. Last month, the price of the phone increased by 10%. Write an
expression for the price of the phone last month.
2. This month, the price of the phone decreased by 10%. Write
an expression for the price of the phone this month.
3. Is the price of the phone this month the same as it was two
months ago? Explain your reasoning.