The Chandlers are moving across the country. Mr. Chandler leaves 4.5 hours before Mrs. Chandler. If he averages 35mph and she averages 65mph, how many hours will it take Mrs. Chandler to catch up to Mr. Chandler?

Mr switzer needs to buy new 1-foot tiles to cover his bathroom floor. the floor is 12 feet long and 8 feet wide. each square foot of tile will cost $1.79. in dollars what will be the total cost of the tiles he needs to buy.

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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