What is the 20th term of the sequence that begins -2 , 4, -8, 16

Me with this one question, and i'll upvote the brainliest answer

Calculate the density of benzene if 300ml of it weighs 263g. a. 0.88 g/ml b. 1.14 g/ml c. 78,900 g/ml d. 37 g/ml

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row