Answer is .05g + .10p ≥ $100
Step by step
Let g = glass bottle
Let p = plastic bottles
We know glass bottles are worth .05 each
We know plastic bottles are worth .10 each
We know we need equal to $100 or more
So we add the two variables to be more than or equal to the goal of $100
Your equation is .05g + .10p ≥ $100