Question

how to find the unit rate of 14lb for $2.99

Answer 1

Look at the units.
If you divide (2.99 dollars) by (14 lb), the quotient will be
(dollars per pound),which is exactly what you want.

Answer 2

Okay so let's try to find the amount of money needed to buy 1 lb. Therefore, let's divide the fraction by 14. 
$\frac{14}{2.99}$ 
Then we'll divide both the numerator and denominator by 14. 
$\frac{14}{2.99}$ ÷ $\frac{14}{14}$
Then we simplify and get:
14÷14=1     2.99÷14=.2135   We can round that to .21
The unit rate for each pound would be 1:.21
I don't know if that helped, but yeah. :)