To find out how much money Jaden will earn for 4 lawn-mowing jobs and 6 pulling-weeds jobs, we can substitute the values of \( l \) and \( w \) into the equation \( 25l + 20w \).
Given:
- \( l = 4 \) (lawn-mowing jobs)
- \( w = 6 \) (pulling-weeds jobs)
Now substitute these values into the equation:
\[ 25l + 20w = 25(4) + 20(6) \]
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.