Is 2 tens 3 tenths 1 thousandth greater or less than 20.31

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.)

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12