16. a. You start with $20 in your savings account and add $10 every week. At...

 

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16. a. You start with $20 in your savings account and add $10 every week. At what rate does the amount in your account, excluding interest, change from week to week? b. Write an equation that models your savings, s(r), as a function of time, † (in weeks). 16. a. You start with $20 in your savings account and add $10 every week. At what rate does the amount in your account, excluding interest, change from week to week? b. Write an equation that models your savings, s(r), as a function of time, † (in weeks).