Lean Body Mass (Your Weight Leaving Out Fat) Helps Predict

Multiple Choice

Lean body mass (your weight leaving out fat) helps predict metabolic rate (how many calories of energy you burn in an hour) . The relationship is roughly a straight line. The least-squares regression line for predicting metabolic rate (y in calories) from lean body mass (x in kilograms) is y = 113.2 + 26.9x.
Using this regression line, you predict that a person with lean body mass 50 kilograms will have metabolic rate equal to about how many calories?

A) 140
B) 1232
C) 1345
D) 1458
E) 5687