Answer:
60
Step-by-step explanation:
60*10=600
so, let's first change the bounds from 1 to 9, so we'll be dropping the indices by 1, in order to do the variable "n".
however, let's use a variable hmmm say "k", where "k" is the value of "n" beginning at 1, thus
k = n - 1.
however, if k = n - 1, then
k + 1 = n. So let's use those fellows then,
4[5(12*3)-2]-7
4[5(36)-2]-7
4[180-2]-7
4[178]-7
712-7= 705 :)
Answer:
72 pages (648 discs)
Step-by-step explanation: