5.1 puzzle: time did you hear about the race between the lettuce and the tomato? can someone do this asap? i’ll rate anyone 5 stars :)

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?