Standard Form

Question

3.80 a pound

and 5 a pound'

Possible combinations with 80 dollars.

Answer 1

The standard form of an equation might be:

 

3.80X +5Y = 80

 

You have two unknowns, I used X and Y as the variables, but you can use whatever variables you want.  A and B would work too. 

 

Hope this helps!