Answer:
a) b) and d) attached answer
c) from Diego's point of view: golf is an inferior good while paintball a normal good
Step-by-step explanation:
The budget constrain is a line of all posible consumption with the given income and cost of goods.
a) attached file
b) The budget constrain will decrease as there is less income available to spend. attached file
c) inferior good demand increase as the income decrease while normal good demand decrease as income decrease.