linear equations word problems

Question

A young sumo wrestler decided to go on a special diet to gain weight rapidly.

w represents the wrestler's weight (in kilograms) after t months.

W=80+5.4t



What was the wrestler's weight before his special diet?

Answer 1

W(t) = 80 + 5.4t

How do you get W?. We multiply t by 5.4 and add that result to 80.

Now what does W(t) mean? It is the weight of the wrestler after t months. So W(5) would represent the weight of the wrestler after 5 month which would be 107km.

So what should t equal at the start? How many months, t, has past since the start at the start? Find W(the t value at the start).