Martha works at a small jewelry store. she designs 2 rings in the first hour. every additional hour, she designs 3 new rings. select all the functions that can be used to find the number of rings, r(n), she designs in n hours.

Well we don't have the choices, maybe they're coming.

We want r(1)=2, r(2)=5, r(3)=8, ...

We can write that



That's equivalent to



Hopefully those are the two expressions among the choices.  There are many equivalent expressions but these are the most likely.