< 3 1. if two thirds of all type-z organisms are red and seven-eighths of all type-z organisms are green, what is the number of type-z organisms that are red out of a sample population of 1,915? round to nearest whole number. a.2873 b.2383 c.1277 d.1727 2.if 82 out of 100 cockroaches are immune to a pesticide after repeated use in area, how many would be expected to be immune in a population of 2.2 million? a. 8,200,000 b.1,804,000 c.1,640,000 d.1,750,000