How many weeks will it take justin to save $133 if he saves $9.50/wk? derive a complete equation to model the problem. use w to represent the unknown value.

Let w be the unknown number of weeks. The total amount that Justin saves is the product of the amount he saves every week and the number of weeks. That is,
                                  ($9.50) x w = $133
Rearranging the equation for w,
                                              w = $133 / $9.50
Thus, the answer is 14.