?This year Robert had the following income and losses from four passive activities:

Activity $4$ ?had $$10,000$ ?of passive losses that are carried over from a prior year. Robert also had wages of $$110,000.$

a$.$ ?How much income or loss does Robert have from the four activities?

b$.$ ?How are the suspended PALs allocated?

c$.$ ?If Activity $1$ ?were sold at an $$18,000$ ?gain, what would be the total income or loss from the four activities?