Two cars start at the same point and travel in opposite directions. the first car travels 10 miles per hour faster than the second car. in 3 hours, the cars are 270 miles apart. what is the rate of the second car? 1)40 mph 2)50 mph 3)80 mph 4)90 mph

Achild has a box full of colored building blocks. she will choose one block without looking. the odds against choosing a blue block are 4/7. what is the probability of choosing a blue block? amanda is playing a role-playing game with her friends. she will roll dice to determine if her character unlocks a treasure chest. the probability of her character unlocking the treasure chest is 13/20. find the odds in favor of her character unlocking the treasure chest.