The 'like' terms are the 16x and the 12x.
They can be combined to make a single term ... 28x .
The response variable is the one on the left of the equal sign, weight.
The predictor variables are those in the equation that gives weight, length and chest size.
the sum of the angles in an ngon (a polygon with n sides) is (n-2)*180
so an octagon has 8 sides and has a sum total of (8-2)*180=1080 degrees
if each of 7 angles is 132, then 1080=?+7*132
1080=?+924
156=?
the 8th angle is 156 degrees
