Can someone please explain how this answer was achieved and the steps? I don't understand the steps/answer at all and am more confused. Where did the 70 come from? I really need to understand this concept. Please help walk me through it and explain this answer. Thank you!

[4 marks] A Woman's weight increases during pregnancy. When she delivers, her Weight immediately decreases by apprexiinately 6 kilograms {including the weight of the baby and all the supporting uids). Suppose that a 55-kg woman gained 13 kg during pregnancy. delivered the baby and. through diet and exercise. lost the remaining weight during the next 30 weeks. (6;) Graph the weight gain and loss during pregnancy and 30 weeks following child birth. Assume the pregnancy lasts exactly 40 weeks and that the weight loss I gain before and after birth is linear. (b) Come up with the Weight gain and loss function formula during pregnancy and 30 Weeks following child birth. (c) 15 this a continuous function? Justify. Answer: From the question , Given that ( a)i. Consider the graph , the weight gain and loss during the pregnancy and so weeks following the birth of the baby . Assume that the pregnancy lasts 40 weeks The weight - gain / loss before and after birth is linear . The plot looks like follows 70+ ( 40, 68 ) 60 (40/ 62 ) weight 50 ( wg ) 30 20 O 10 20 30 40 50 60 70 -(weeks )( b)i- Itis a line in graph which contain (010) to ( 40168 ) . 4 - 0 = 60- 0 ( x - 0 ) 40- 0 y = 68 x 40 8 = 17x This is the formula for weight gain during pregnancy , and " weight loss after pregnancy 30 weeks following the child birth (40/ 62 ) to ( 1010) ! y - 62 = 0-62 (2 - 40) 70 - 40 9- 62 = - 62 (2-40) 30 y - 62 = - 31 x+ 31x40 31 , ty = 62 + 1240 Is 3 1 2 + 154 = 930 + 1240 IS IS 312 + 154 = 2170 This function is not continuous and it is discontinuous at ( $= 40 weeks )