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4. Suppose the government borrows $250 billion (AG = - 250) leg next year than this year. Refer to the graph below to answer the following questions. Be specic about the gig! of the changes of the variables below. [10 points] Sl Q of loanable funds 1680 1800 1930 a. What is the quantitative change in public savings equal to? b. What is the quantitative change in private savings equal to? c. What is the quantitative change in national savings equal to? d. What is the quantitative change in investment equal to