sally wants to purchase some school supplies. Notebooks cost $3 and pens cost $2. sally is not allow to purchase more than 12 items. sally know that she will need at least 4 notebooks and at least 5 pens to be prepared for school. define your variables for x and y

Respuesta :

8y+60x because 4 notebooks that cost 2$ equal 8$ and 5 pens that cost 12$= 60
she would have bought 9 items and that would have cost $22