calculate his total earnings:
Total earnings = Earnings from raking leaves + Earnings from shoveling snow
= $58.35 + $82.80
= $141.15
Now, we subtract his total earnings from the cost of the sports camp:
Amount needed to pay for sports camp = Cost of sports camp - Total earnings
= $180.00 - $141.15
= $38.85
Therefore, Thaddeus needs $38.85 more to pay for the sports camp. Rounded to the nearest decimal, it's $38.90.