Part $1$: Start by deconstructing the challenge to create a Formula using words only:

Example $($Variable A $*$ Varable B$)+($Variable C $-$ Variable D$)$

Before you begin, break your challenge into categories. Align these categories in a sequential order with the frist category to establish the platform for the logic pattern. For example you have two $($or three$)$ seasons in a school year called semesters. This factor based on time can set the pattern

Example of a Category Formula: Lemonade stand

Average cost per class per semester

Hours of operation

Days of operation $x$ hours per day $=$ weekly hours of operation

Weekly hours of operation X Weeks in a month $x$ months $($doesn$\text{'}$t have to be all year, $)=$ yearly total of hours of operation

The formula you use can vary and the summation will never be correct But, you will be close The key is to transform your analysis into a mathematical logic model. This model can be used as a benchmark to guide progress and expectations as more details become clear.

Special Note: Round your numbers and factor by $10.$

Part $2$: Estimate each Variable with a lower and upper estimates. Then do the math.

You can use the Free Form Math Game Plan application if you want help. You can find the app in the Tools Page or search for the app using the SEARCH window at the top of the portal. Otherwise, simply crunch the numbers for each colum.

Depending on how you construct your the assumption for your estimates, a quick way to factor Low and High is Low is $x80\%$ and high is $x120\%$