Question:
Carole worked $3457_w9_h37.png$ of the 28 days at the bookstore, so she worked 7 days at the bookstore $6059_w73_h37.png$. She did not work on $3683_w18_h37.png$ of the days, which equals 2 days $7653_w74_h37.png$. Subtracting these amounts from 28 gives the number of days she worked at the restaurant (28 − 7 − 2 = 19).