statistic problem

Question

The equation used to predict the total body weight? (in pounds) of a female athlete at a certain school is
y= -113 plus 3.31x₁ +1.53x₂ where
x₁
is the female? athlete's height
?(in inches) and
x₂
is the female? athlete's percent body fat. Use the multiple regression equation to predict the total body weight for a female athlete who is
63
inches tall and has
22%
body fat.

Answer 1

y= -113 + 3.31x₁ +1.53x₂ where
x₁ is the female athlete's height (in inches) and x₂
is the female athlete's percent body fat

 

OK, they simply gave you a formula, and they have given you x₁ = 63 in and x₂ = 22 is the % body fat. 

Just substitute those numbers and calculate!

 

I assume that the subscripts are not confusing you.