Josh keeps all his spare keys in a box under his bed. Recently, Josh decided the box was becoming unmanageable, as none of the keys were labeled. He set about labeling them with colored stickers that indicated what each key opened. Blue sticker Green sticker Front door of the house 5 11 Back door of the house 12 7 Car 5 3 15 6 Safety box What is the probability that a randomly selected key opens the back door of the house or is not labeled with a blue sticker? Simplify any fractions