Answer:
Big Stick policy, in American history, policy popularized and named by Theodore Roosevelt that asserted U.S. domination when such dominance was considered the moral imperative. Roosevelt’s first noted public use of the phrase occurred when he advocated before the U.S. Congress increasing naval preparation to support the nation’s diplomatic objectives.
Tokuji can increase his discretionary spending by $20.
This condition can be applied if his fixed and variable cost remain in the previous state except the discretionary spending. Tokuji still have $180 after his new income attributed into every fixed and variable cost, except the discretionary spending ($180 = $650 - $300 - $30 - $100 - $40). The remaining amount still can be attributed to $110 saving and $70 of the discretionary spending. Then, there would be an increase amounting $20 for the discretionary income comparing to the previous amount.