What is the center for the circle with this equation x^2+y^2+4x+6y-36=0?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

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?

Aphrase is shown read the phrase and give me the answer