One expression that Gary can use,where y is the amount of food eaten in a year and x the amount of food eaten in a weeks is:
y=x*52
but we actually know that the cats eat one third of 3 1/2 pounds, that is:
So we can substitute this:
y=
which is y=7*13=91
So we actually know that the cats eat 91 pounds of food a year!
y=x*52
but we actually know that the cats eat one third of 3 1/2 pounds, that is:
So we can substitute this:
y=
which is y=7*13=91
So we actually know that the cats eat 91 pounds of food a year!