A train left at 2210hrs and arrived at 7 1/2hrs later (its a mixed fraction) at what time did the train arrive?

if the distance between the two towns is 530km calculate the speed of the train

What is the slope of the line shown below?

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

If you have 12 feet of string and you cut it into equal length of 5 inches each how much string will be left