Ursula has fraction 1 over 2 cup of butter. she uses fraction 1 over 4 cup of butter to make a batch of brownies. part a: how many batches of brownies can ursula make with fraction 1 over 2 cup of butter? (4 points) part b: on your own paper, draw a fraction model that shows the total number of batches of brownies that ursula can make with fraction 1 over 2 cup of butter. make sure to label the model. below, explain your model in detail to describe how this model visually shows the solution for part a. (6 points)