Please help me. it's so confusing

3.0

Step-by-step explanation:

maple cost=$4.20

if 6 board feet was used then 6×4=24

total=31.60-24 =3.0 estimated

60.9774

step-by-step explanation:

because when you add 47.6 plus 7.32 equals 54.92

and when you add .0574 + 6= 6.0574

and when you add 54.92 and 6.0574 you get the answer of 60.9774.

plzz mark brainlest last one got deleted. cause i didn't explain it but i did but i understand what the mod meant