Shardell and Marsha are planning a party. Since they are both hosting, they have agreed to split the cost for everything in half. They catering bill is $325, the venue bill is $250, and the DJ is $375. If state tax is 9% what will Shardell's portion cost?
The total cost of the catering and venue is $325 + $250 = $<<325+250=575>>575.
The total cost of everything is $575 + $375 = $<<575+375=950>>950.
The state tax is an additional 9% of $950 = $<<9*.01*950=85.5>>85.50.
The total cost including tax is $950 + $85.50 = $<<950+85.5=1035.50>>1035.50.
Shardell's portion will cost $1035.50 / 2 = $<<1035.50/2=517.75>>517.75. Answer: \boxed{517.75}.