What is the difference between -4.5 and 3.5 ?

Which equations represents circles that have a diameter of 12 units and a center that lies on the y-axis? check all that apply

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean