Suppose a person of age A years has weight w in kilograms (kg) and height h in centimeters (cm). Then, the Harris-Benedict equations say that the daily basal energy expenditure in kilocalories is B_m(w, h, A) = 66.47 + 13.75w + 5.00h − 6.77A for a male and B_f(w, h, A) = 655.10 + 9.60w + 1.85h − 4.68A for a female.

a. Find the basal energy expenditure of a man who weighs 90 kg, is 190 cm tall, and is 22 years old.

b. Find the basal energy expenditure of a woman who weighs 61 kg, is 170 cm tall, and is 27 years old.

c. A man maintains a weight of 85 kg and a height of 193 cm throughout his adult life. At what age will his daily basal energy expenditure be 2,018 kilocalories?

d. A woman maintains a weight of 67 kg and a height of 173 cm throughout her adult life. At what age will her daily basal energy expenditure be 1,504 kilocalories?