Question

one model for the ideal body weight, w, for men (in kilograms) is W=50 + 2.3(h-60) rewrite the function in order to express height as a function of weight

Answer 1

This is a quite simple algebraic problem. The trick is to manipulate the terms through transposing. Always remember that if you want to transfer a term to the other side, take its opposite sign. The solution is as follows:

W=50 + 2.3(h-60)
2.3(h - 60) = W - 50
h - 60 = (W - 50)/2.3
h = (W - 50)/2.3 + 60