Given the equation \( S=1000-50 \mathrm{~m} \), where \( S \) is the amount of savings \( (\$) \) and \( m \) is the number of months. a) Find the amount in savings after 8 months. b) After how many months will the savings be \( \$ 0 \) ?
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To find the amount in savings after 8 months, we substitute \( m = 8 \) into the equation: \[ S = 1000 - 50 \times 8 = 1000 - 400 = 600 \] So, the amount in savings after 8 months is \( \$600 \). Next, to determine after how many months the savings will be \( \$0 \), we set \( S = 0 \): \[ 0 = 1000 - 50m \] Rearranging gives us: \[ 50m = 1000 \quad \Rightarrow \quad m = \frac{1000}{50} = 20 \] Thus, the savings will be \( \$0 \) after 20 months.