4. Application/Analysis (3pts) (a) Find the amount of the saving account after 15 years of Marcus's plan: (b) Based on the above calculation, rank each plan in terms of money saved for Maria: 1 for the most and 3 for the least: Martha'splan Martin'splan Marcus s plan 5. Assumptions (3pts) (a) Find the amount of money saved in the ist ycar. according to Martin's plan: (b) Between Martin's plan and Martha's plan, which plan is more doable and more tikely to continue in the fulure? Ixplain your reason: 6. Communications (3pts) (a) Is there a difference in ranking (of Martha's plan and Martin's plan) in Part I and Part II? (b) If there is a difference, where does this difference come from? Problem: The Reyes family has just had a first child, Maria. Everybody is excited and wants the best for their daughter: (A) The mother, Martha suggests that they will save $1,000 for Maria's 1I birthday, and increases by $100 each year, i.e. $1,100 for Maria's 2nd birthday... (B) The father, Martin agrees to that plan, but he wants to make a "small" additional plan of $1 for her 1tt birthday, and double its amount each year, i.e. $2 for 2nd birthday, and $4 for 3rd birthday..., "It will not be much", he said. (C) Maria's grandfather, Marcus, who is already retired, deposited $15,000 into a saving account that earns 4% interest compounded annually. We will analyze these saving plans at different stages. I. VISUAL COMMUNICATION: AT MARIA S I0th BIRTIIDAY