The San Bernardino County Fair hires about $90$ people during fair time. California has a state income tax of $9\%.$ Sandy Denny earns $$13\mathrm{.}20$ per hour; George Barney earns $$14\mathrm{.}20$ per hour. They both worked $39$ hours this week. Both are married; however, Sandy files jointly and George files separately. Assume a rate of $6\mathrm{.}2\%$ on $$142,800$ for Social Security and $1\mathrm{.}45\%$ for Medicare.

a$.$ What is Sandy's net pay after FIT $($use the Table $9\mathrm{.}1),$ Social Security tax, state income tax, and Medicare have been taken out?

Note: Round your answer to the nearest cent.

Sandy's net pay after FIT

b$.$ What is George's net pay after FIT $($use the Table $9\mathrm{.}1),$ Social Security tax, state income tax, and Medicare have been taken out?

Note: Round your answer to the nearest cent.

George's net pay after FIT

What is the difference between Sandy's net pay and George's net pay?

Note: Round your answer to the nearest cent.

Difference in net pay