8) The circle graph represents Luca's expenses for one month. a) Which three categories represent his greatest monthly expenses? [1] b) Luca spent a total of $1600 for the month. What amount did he spend on books and supplies? [1] Luca's Monthly Expenses Personal Health and expenses 8% dental 1% Travel 6% Meals 15% Residence 25% Tuition 35% Books and supplies 10%