Answer:
Discretionary expenses are Optional and Can be reduced to help save money. For example, a Magazine Subscription is a discretionary expense.
Step-by-step explanation:
Fits the definition of a discretionary expense and the example matches too because it is Optional.
Answer: y3/xz
Step by step is provided in the screenshot below
4398.23 is the volume
300
120 ÷ 2/5 = 300