Manny Ashala is a marketing analyst, but he made only $28,000 last year because he was employed only part of the year. He paid $5,000 in taxes and spent another $10,000 for food, housing, a car, and other "necessities." Manny's discretionary income was $23,000. The information given is irsufficient. $28,000. $18,000. $13,000