(3x+5)+(7x-3)
Can someone give me the answer plzzz

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?

Asap! i'm not good math and i'm lost.