get_supply and get_balance are not actions that you can use with cleos. Only the actions defined in the macro EOSIO_ABI( eosio::token, (create)(issue)(transfer) ) at the bottom of eosio.token.cpp can be used as actions with cleos. get_supply and get_balance are not exposed directly as actions, instead, I believe you would call them from inside other functions that you would write on your own. You can get the balance for rayadmin by doing

<p dir="auto"><code>cleos get table eosio.asset rayadmin accounts <p dir="auto">and the supply with <p dir="auto"><code>cleos get table eosio.asset SYS stat