How many calories should a 5' 4 190 pound 46-year-old eat per day to lose 30 pounds?

It depends on two things. 1) How many calories do you burn per day (this depends on several factors, the most important being your activity level) and 2) how fast you want to lost the weight. You can buy a product called a "bodybugg" that actually measures how many calories you burn every day and tells you exactly what you can eat and still lose weight. (My boyfriend swears by the bodybugg.)