A tree that grows 3 feet every 5 years is growing at a rate of ___ feet per year.'

Objective: You need to find the number of feet the tree grows every year (the unit rate).

FIrst, we look at what we have now. The tree grows 3 feet every 5 years, so we have to divide 3 by 5 to get the number of feet the tree grows in one year.