The mean number of hours per day spent online according to a national survey is 7 hours, with a standard deviation of 3 hours. If each time was increased by 2 hours, what would be the new mean and standard deviation? Justify your answers with the proper
work or explanation.

Don't know how to find x given these segment lengths

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.