Answer:
3200 kcal per day
Step-by-step explanation:
Two pounds weight loss a week = approx 7000 kcal per week with 1 pound equal approx 3500 kcal
Total amount energy intake per week = 4200 × 7 = 29400 kcal
two pound loss = 7000 kcal
29400 - 7000 = 22400 kcal
22400 kcal / 7 = 3200 kcal per day
so Lance will have to reduce his energy intake to 3200 kcal