To find out how much money Jaden will earn for 4 lawn-mowing jobs and 6 pulling-weeds jobs, we can use the formula:
\[ 25l + 20w \]
where \( l = 4 \) (number of lawn-mowing jobs) and \( w = 6 \) (number of pulling-weeds jobs).
Now we can substitute the values into the formula:
\[ 25(4) + 20(6) \]
Calculating each term:
\[ 25 \times 4 = 100 \]
\[ 20 \times 6 = 120 \]
Now, adding these two results together:
\[ 100 + 120 = 220 \]
Therefore, Jaden will earn $220 for 4 lawn-mowing jobs and 6 pulling-weeds jobs.