Among various populations of plants or animals, diseases spread exponentially. use the function y = 8000(1 - i)
to model the spread of common corn rust through a field of 8000 corn plants, with t equal to the number of days
since the first case of the disease. how many plants will be infected with common corn rust after 10 days?
(ps this is too hard im not smart enough)

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

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