First, carefully read the question to understand what is being asked. Highlight important facts and numbers, and determine what needs to be found out. Choose an appropriate method to solve the problem. Apply the method, using the highlighted information, to arrive at a solution. Check the answer to ensure it correctly answers the original question. In this case, the method of multiplication was used to determine that D is the cheapest form option for Mrs. Reahl.

1. Question
Process
First, carefully read the question, highlight the important
parts of the problem (prioritize). We highlighted the facts
and numbers. Understand the question. What do you have
to find out? We realized that the most important parts were
the highlighted parts. Then choose the best method of
operation. We picked multiplication. Now, try to solve the
problem, using your previous information. We did this by
multiplying (from graph) A by 35, B by 2, C by 3 and D by
1. Then using the result of this, the lowest number was the
answer. Answer the problem, using final results from your
solving. Lastly, check your answer using this. Our answer
ended up as: D is the cheapest form option for Mrs. Reahl.