Each morning you feed your dog 2525 cup of dry dog food. At night, you feed him 1212 cup of dry dog food. You buy a bag of dog food that contains 1818 cups. How many days will the bag last?

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent. the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244