Josh went to applebee's and enjoyed a delicious steak. he enjoyed his server and wanted to give her an extra special tip . usually josh tips 20 % to all servers . today he tipped his server 25 % of his subtotal. after josh ordered his desert, his subtotal before tax was $21.00. how much did josh tip his server? how much more did he tip his server today, than he normally would tip? after the 7.5 % sales tax , and the 25 % tip , how much was josh 's final bill ?