Please help this is another one I really don't understand!! It requires 1/4 of a credit to play a video game for one minute.
a. Emma has 7/8 credits. Can she play for more or less than one minute? Explain how you know.
b. How long can Emma play the video game with her 7/8 credits.

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