Question

Blakemore elementary school has 1,000 students. each of the 15 student council members of Blakemore Elementary School is responsable for telling exactly 2 other students about the upcoming school pep assembly. Each of those 2 is then responsable for telling 2 other students. It takes 15 minutes for each round of students to be told. How many minutes will take for 1,000 students to receive the information about the pep assembly?

Minute               students               total number of students told

0                          15                           15
15                         30                          15+30=45
30                          60                         45+60=105

Answer 1

end of round1 -- 30 students -- 15 minutes

round2 -- 60 -- 30 min

round3 -- 120 -- 45

round4 -- 240 -- 60

round5 -- 480 -- 75

ruond6 -- 960 -- 90

round7 --1920 -- 105

Explanation:

Answer 2

It seems like you already have it but you haven't done the work all the way through yet. anyway Here:

Minutes: Students:
45 120
60 240
75 480
90 960
105 1000+