Problem $2$ The Rink offers annual $$300$ "special memberships" that entitle members to unlimited use of ice$-$skating facilities and locker rooms. Each new membership also entitles the member to receive ten $"30\%$ off a $$5$ meal" coupons that are redeemable at the Rink's snack bar. The Rink estimates that approximately $80\%$ of the coupons will be redeemed. A "The Rinko Jacket is also given away with a special membership. The jackets sell for $$40.$ People can pay $$275$ to have unlimited use of the facilities without the special membership package. The membership runs from May $1,2021$ to February $28,2022(10$ months$).100$ memberships were sold on the May $1$ season in $2021$ for cash. In addition, $200$ snack bar coupons had been redeemed by Dec. $31,2021($no revenue from the coupons was recognized w fon they were redeemed during the year$).$

$($I$)$ What were the PO's?