Pls help me :( An exercise club offers three payment plans for aerobics classes. Plan A charges $6 per class plus a one-time membership fee of $35. Plan B charges $5 per class plus a one-time membership fee of $50. Plan C offers unlimited aerobic classes for a one-time membership fee of $149.

Part A: Write and solve an inequality to find how many classes you would have to attend for Plan A to be a better value than Plan B.

Part B: Write and solve an inequality to find how many classes you would have to attend for Plan A to be a better value than Plan C.

Part C: The club reduces the cost of Plan C to $100. If you attend 15 classes, which plan is now the best value?

(co 3) the soup produced by a company has a salt level that is normally distributed with a mean of 5.4 grams and a standard deviation of 0.3 grams. the company takes readings of every 10th bar off the production line. the reading points are 5.8, 5.9, 4.9, 6.5, 5.0, 4.9, 6.2, 5.1, 5.7, 6.1. is the process in control or out of control and why? it is out of control as two of these data points are more than 2 standard deviations from the mean it is in control as the data points more than 2 standard deviations from the mean are far apart it is out of control as one of these data points is more than 3 standard deviations from the mean it is in control as the values jump above and below the mean