A person has $120 to spend on two goods (x and y) whose respective prices are $3 and $5 per unit. (a) Draw the budget line showing all the different combinations of the two goods that can be bought with the given budget. (b) What happens to the budget line if the budget (money available to spend) falls by 25%. (c) What happens to the budget line if the price of good x doubles? (d) What happens to the budget line if the price of good y falls to $4?