In an old story, a man puts 2 grain of rice on the first space of a chessboard. He puts 4 grains on the third space and so on write and evaluate an expression with exponents to find how many grains of rice the man puts on the tenth space.

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

Suppose you want just guess at the answers in a 5 question multiple-choice test. each question has 3 responses and only one is correct. what is the probability of getting two questions right just guessing? 20 points 0.3275 0.2753 0.7532 none of the above

Math question.. plz me .. best answer all