If a $2000 bicycle depreciates 20% each year, write a rule that represents the bike's worth after n number of years. Show all work.

On a piece of paper graph f(x)=5•(0.4)^x

If there is 20 dogs in the shelter and 5 dogs get homes, and then 43 more dogs come. how many dogs are there in the shelter?

Use complete sentences to differentiate between a regular tessellation, and a pure tessellation. be sure to include specific types of polygons in your explanation.