To calculate how much money Jaden will earn for 4 lawn-mowing jobs and 6 pulling-weeds jobs, we can substitute the values into the equation:
\[ 25l + 20w \]
where \( l = 4 \) (lawn-mowing jobs) and \( w = 6 \) (pulling-weeds jobs).
Now substituting the values:
\[ 25(4) + 20(6) \]
Calculating the individual terms:
\[ 25(4) = 100 \] \[ 20(6) = 120 \]
Now adding these together:
\[ 100 + 120 = 220 \]
Thus, Jaden will earn $220 for 4 lawn-mowing jobs and 6 pulling-weeds jobs.