Maria baked bran and oatmeal muffins for the class. The recipe for bran muffins calls for 5kg of butter and 2kg of flour, and 2kg of butter and 3kg of flour to make the oatmeal muffins. Altogether she used 18kg of butter and 16kg of flour. How many batches of each type of muffin did she bake?

Given this information, which expression must represent the value of b?

Fabian harvests 10 pounds of tomatoes from his garden. he needs 225 pounds to make a batch of soup. if he sets aside 2.8 pounds of tomatoes to make spaghetti sauce, how many batches of soup can fabian make?

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?