We know that
• The bike costs $245.
,
• Jennifer adds $15 per week to her savings.
Let's call w weeks. Based on the given information, we express the following.
![\begin{gathered} 15w=245 \\ w=(245)/(15) \\ w=16.3333\ldots \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/60nihojxa9tt87d80qglzax6l4dx3uzt5k.png)
It will take 17 weeks to save enough money to buy that bike.
Notice that we can't say 16 weeks, otherwise, the money wouldn't be enough to buy it.