Investigation 4.3

Ok,  this investigation is asking you to put everything in the book together. It also is trying to have a context in everyday life where you might use the distributive property. The question about writing an equation for the cost of water and trail mix is probably the most instructive for this. 

Be careful when writing your equation to include tax. If tax is 4% and you multiply the cost by 0.04 do you get an answer that includes the items and the tax?  If not how can you write the equation so that one equation will compute the final cost quickly and easily?

 

Spoiler alert!  Don't look further until you try it...

If you multiply the cost of water and trail mix (1.50+2.whatever) by 1.04. The .04 is obvious, but the 1 represents the initial cost of the items. 

There are a bunch of questions that I don't love like the how do the order of operations...  Don't worry to much about these questions. 

Today we are doing a kahoot to review he book. I will post the name of it so that you can play it on Monday and then take a photo of your results and sent it to me. Enjoy CA.