W I L L G I V E B R A I N L I E S T I F C O R R E C T

Aline passes through 3,7 and 6,9 what equation represents the line

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?

What rotation was applied to triangle def to create d’e’f’?