Please help me these are two separate questions: Principle: $ 500 Rate: 2% compounded Semiannually Time: 1 yr(s)*
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Principle: $ 800 Rate: 3.5% compounded Semiannually Time: 1.5 yr(s) *
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At the beginning of the year, adrian's savings account balance was \$28$28. each week, he deposits another \$15$15 into that account, and he doesn't spend any of his savings. is his savings account balance proportional to the number of weeks since the start of the year?