David's pumpkin cost $8.22
His sister's pumpkin cost $4.98
They paid $13.20
-2(4x-1)=5+7
(4x-1)=12/-2
4x=-6+1
x=-5/4
The answer is 0.12 millimeters because if you multiplied the numbers it would give you 0.12 mm hope this is correct
The answer is c. forgive me if i am wrong
i think the answer is 24.56