Ance ate a salad and Four-fifths of a turkey burger for dinner. The salad contained 80 calories and his entire meal contained 440 calories. Which equation can be used to determine x, the number of calories in the entire turkey burger?
440 = four-fifths x + 80
80 = four-fifths x + 440
440 = four-fifths (80) + x
440 = 80 x + four-fifths