Answer:
She spent 4 $10 bills and 3 $1 bills
Step-by-step explanation:
She used 7 bills and you have 3 $1 that makes the 3 of 43 then 4 $10 bills adds up to 40 so add 40 and 3 together you get the price of the shoes and if you add the 4 $10 bills and the 3 $1 bills you get 7
