Refrigerators in a random sample of 60 refrigerators, the mean repair cost was $150.00 and the standard deviation was $15.50. construct a 99% confidence interval for the population mean repair cost. interpret the results.

1foot = 12 inches; 1 yard = 3 feet

State whether weight is a function of height for the six students and explain. a. yes, height is a function of weight because two students weigh 165 pounds but have different heights. b. no, height is not a function of weight because two students weigh 165 pounds but have different heights. c. yes, weight is a function of height because for each value of height there is one corresponding value of weight. d. no, weight is not a function of height because there is not enough data to determine a function.

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?