Answer: A. 5 weeks.
Step-by-step explanation: To solve this problem, we need to determine the rate at which Jamie is losing weight and then calculate how many more weeks it will take her to reach her goal of 168 lbs.
From the table, we can see that Jamie's weight in the first week is 192 lbs, and by the fourth week, she is down to 183 lbs. She has lost 9 lbs over three weeks (from week 1 to week 4), which means she is losing weight at a rate of 3 lbs per week (9 lbs / 3 weeks = 3 lbs/week).
Now, let's calculate how many pounds Jamie still needs to lose to reach her goal: Her current weight at week 4 is 183 lbs, and her goal weight is 168 lbs. 183 lbs - 168 lbs = 15 lbs
At a rate of 3 lbs per week, we need to find out how many weeks it will take to lose those remaining 15 lbs: 15 lbs / 3 lbs/week = 5 weeks
It will take Jamie an additional 5 weeks to reach her goal of 168 lbs, assuming she continues to lose weight at the same rate. Therefore, the correct answer is: A. 5 weeks
