I have no idea in this question, try and give resonnably good explanations

Anna lives for two periods, 1 and 2. Her consumption in the two periods is determined by the tangency point between the indifference curve (?) and the budget line

(d) How is Anna's consumption in period 2 affected by the decrease in the interest rate?

(e) Explain the results in terms of income and substitution effects.

Fig. 4.10 The real interest rate on consumption with negative saving 02 [a] Is Anna saving or borrowing in period 1? (b) Suppose the real interest rate falls. Draw the new budget line so that it is tangent to the indifference curve f. How is Anna's consumption in period 1 affected by the decrease in the interest rate?