Need 4th and 5th Thank you so much.

Q. 4 Christina has decided to spend her evening eating sushi and watching videos. Each piece of sushi and each video costs $3. Her total utility for the two products is shown in the table below. VIDEO MOVIES Number Total Utility SUSHI PIECES Marginal Utility Number Total Utility Marginal Utility 40 34 2 76 2 64 3 108 3 88 4 136 4 106 5 162 5 118 6 184 126 a) Complete the marginal utility columns in the table above. b) How should Christina allocate a budget of $21 to achieve utility maximization, and what will be her total utility? Videos: Pieces of sushi: Total utility: c) Suppose that the sushi shop offered a deal whereby Christina can buy a six-piece pack for $15. How will Christina allocate her budget, and what will be her total utility now? Videos: Pieces of sushi: Total utility: Q.5 Jan loves eating toast and drinking cans of pop. The table below shows his marginal utility measured in terms of dollars, that is, in SMU. PIECES OF TOAST POP Pieces $MU/$1 Cans $MU/$1 1.60 2.90 2 1.50 2 2.40 3 1.10 3 1.90 4 0.70 4 1.10 5 0.30 0.10 6 -0.10 6 -0.60 Suppose that Jan has a budget of $7 and the price of both the toast and the pop is $1.00. How many of each item will Jan buy to maximize his total utility