If Martha walks a distance represented by \( d_M \) each day, and Susan walks twice as far as Martha, then the distance Susan walks in \( t \) days would be represented by:
- Let the distance that Martha walks each day be \( d_M \).
- Since Susan walks twice as far, that distance would be \( d_S = 2 \times d_M \).
- Over \( t \) days, the total distance Susan walks would then be:
\[ d_S = 2 \times d_M \times t \]
Assuming \( d_M \) is the constant distance that Martha walks each day, we need to express it in terms of \( t \).
The final equation representing the distance \( d \) that Susan walks in \( t \) days, without explicitly knowing the value \( d_M \), would be:
\[ d = 2 \times d_M \times t \]
If \( d_M \) is the daily distance walked by Martha, the answer would be:
\[ d = 2d_M \times t \]
If you have the specific distance \( d_M \) provided in the graph, substitute that value into the equation to find \( d \) in terms of \( t \).
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