What is the slope of the graph of the linear function?

What situation is an example of an observational study

Use the function f(x) is graphed below. the graph of the function to find, f(6). -2 -1 1 2

Beth makes batches of bluberry muffins and banna muffins. each batchis 6 muffins. she makes 2.5 batches of bluberry muffins. how many batches of bananna muffins should beth make if she wants to have a total of 60 muffins?