Which expression is equal to t + (u + v)?
(t + u) + v
(t + u) ⋅ v
tu + v
t + uv

What will be the end result for the taxpayer who filed his federal income tax return using the 1040ez form shown belowa he'll owe $173b he'll receive a refund of $173c he'll owe $3921d he'll receive a refund of $3921