Three friends, Mackenzie, Enola, and Shandra are saving different amounts of money each week. Mackenzie started with 18 and added 10 every week. Enola's savings are represented by the table below, and Shandra's savings are represented by the graph below. Enola's Savings Weeks (x) & Total Savings (y) 2 & 54 6 & 134 10 & 214 14 & 294

To compare the savings of Mackenzie, Enola, and Shandra, we need to determine the rate at which each of them is saving money per week and their starting amount. We already have this information for Mackenzie, so we need to calculate it for Enola and Shandra.Step 1: Calculate Enola's weekly savings rate and starting amount.From Enola's savings table, we can see that her savings increase by the same amount every four weeks. We can calculate the weekly savings rate by taking the difference between any two consecutive savings amounts and dividing by the number of weeks between them.For example, between weeks 2 and 6, Enola's savings increased by:$134 -$54 = $80Since this increase happened over 4 weeks, her weekly savings rate is:$80 / 4 weeks = $20 per weekTo find Enola's starting amount, we can subtract the total savings after 2 weeks from the amount saved over those 2 weeks:$54 - (2 weeks * $20/week) =$54 - $40 =$14So, Enola started with $14 and adds$20 every week.Step 2: Calculate Shandra's weekly savings rate and starting amount using the graph.We have two points from Shandra's savings graph: (5, $91.50) and (8,$144). We can use these points to find the slope of the line, which represents Shandra's weekly savings rate.The slope (m) is calculated by the change in y divided by the change in x:m = (y2 - y1) / (x2 - x1)Using the points (5, $91.50) and (8,$144):m = ($144 -$91.50) / (8 - 5)m = $52.50 / 3m =$17.50 per weekThis means Shandra saves $17.50 each week. To find her starting amount, we can use the point-slope form of a line, y - y1 = m(x - x1), where (x1, y1) is a point on the line.Using the point (5,$91.50):$91.50 - y1 =$17.50(5 - x1)Since we want to find the starting amount, we set x1 to 0 (the starting week):$91.50 - y1 =$17.50(5 - 0)$91.50 - y1 =$87.50y1 = $91.50 -$87.50y1 = $4So, Shandra started with$4 and adds $17.50 every week.Final Answer:- Mackenzie started with$18 and adds $10 every week.- Enola started with$14 and adds $20 every week.- Shandra started with$4 and adds $17.50 every week.