At the end of the summer, Caitlin had saved $120 from her summer job. This was her deposit into a…

At the end of the summer, Caitlin had saved $120 from her summer job. This was her deposit into a new savings account at the bank. As the school year starts, Caitlin is going to deposit $5 each week from her allowance. Is her account balance proportional to the number of weeks of deposits? Use the table below. Explain your reasoning.

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