Question

The school band is scheduled to march in the annual parade, but the band’s starting point is changed the day before the parade. The band director calls three band members. Each band member calls three other band members. Then these band members each call three members. How many band members, including the band director, are notified of the new starting point?




A. 12 members


B. 13 members


C. 20 members


D. 40 members

Answer 1

3 people to start

3 each, 3+3+3=3x3=9

so we have 9 new band members, plus our original 3
these 9 call 3 each so we get 3x9=27
plus the original 9 so now we hvae
3+27+9=39
dont forget the band director so add 1
39+1

Answer 2

thx