Chapter 2 - Fundamentals of Electric Circuits - Part 1 Circuits - Homework Problems - Page 53: 2.28

a . Power supplied by source for I= 0 , 0W I= 5, 60W I= 10, 120W I= 20, 240W I= 30, 360W b . Power dissipated in an non ideal source for I= 0 , 0W I= 5, 7.5W I= 10, 30W I= 20, 120W I= 30, 270W c . Power supplied to load resistance for I= 0 , 0W I= 5, 52.5W I= 10, 90W I= 20, 120W I= 30, 90W d . Terminal voltage = 12 -0.3 I Power supplied to circuit = 12I -0.3 I^{2}

Steps provided in the gif uploaded.