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To find out how much money Jaden will earn for 4 lawn-mowing jobs and 6 pulling-weeds jobs, we can evaluate the expression \( 25l + 20w \) by substituting \( l = 4 \) and \( w = 6 \).
Now substituting the values into the expression:
\[
25l + 20w = 25(4) + 20(6)
\]
Calculating each term:
\[
25(4) = 100
\]
\[
20(6) = 120
\]
Now, add the two results together:
\[
100 + 120 = 220
\]
Therefore, Jaden will earn **$220** for 4 lawn-mowing jobs and 6 pulling-weeds jobs.