I need help. Please, please, please don't put a link to a website as your answer. If your answer is correct, I will give you brainliest.

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

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

Solve -.016x= -16. need solving this