From the word problem, we know that:
• Matt earns $6 per hour spreading mulch
,
• Matt earns $4 per hour pulling weeds
Since Matt spent 3 hours spreading mulch, we can find his earnings multiplying 3 by $6.

Since Matt spent 2 hours pulling a weed, we can find his earnings multiplying 2 by $4.

Finally, we add up Matt's earnings from doing both activities.

Therefore, last week Matt earned $26.