858.743 Round to the nearest ten

If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that

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

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?