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This equation shows how the number of spools of thread that Zoe has left is related to the number of dresses that she sews.

s = –d + 12

The variable d represents the number of dresses Zoe has sewn, and the variable s represents the number of spools of thread remaining. How many dresses can Zoe sew, at most, and still have 4 spools of thread left?

dresses

1 answer

To find out how many dresses Zoe can sew and still have 4 spools of thread left, we will use the equation provided:

\[ s = -d + 12 \]

We know that \( s = 4 \) (the number of spools remaining). We can substitute this value into the equation and solve for \( d \):

\[ 4 = -d + 12 \]

Now, let's solve for \( d \):

  1. Subtract 12 from both sides:

\[ 4 - 12 = -d \] \[ -8 = -d \]

  1. Multiply both sides by -1:

\[ d = 8 \]

So, Zoe can sew at most 8 dresses and still have 4 spools of thread left.