It takes 77 pounds of seed to completely plant a 9 -acre field. how many pounds of seed are needed per acre?
debra bought 10 pounds of sugar for $5. how many dollars did she pay per pound of sugar?

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