Answer:
A situation represents a proportional relationship if you can write equivalent ratios of related quantities in that situation.
Q
Knowing how to write two-column geometry proofs provides a solid basis for working with theorems. Practicing these strategies will help you write geometry proofs easily in no time:
Make a game plan. Try to figure out how to get from the givens to the prove conclusion with a plain English, commonsense argument before you worry about how to write the formal, two-column proof.
Look up how to do geometry proofs and the first thing that should pop up if your on google should be a site called dummies.com
Let's use the variable E to represent the total value spent by Elena and T to represent the total value spent by Taniy.
If Elena spent $7.45 plus the cost of 3 pounds of cherries, the expression for the amount she spent is:

Taniy spent $3.35 plus the cost of 2 pounds of cherries, so the expression for the amount the spent is:

To find how much more Elena spent, let's subtract both expressions:

Therefore the answer is 4.1 + p.
For number 2 it's would be 12.8
Sorry I don't have time for number 3