Question

Each term of a sequence is one more than twice the term before
it. If the first term is 1, what is the sum of the first 5 terms of
the sequence?

Answer 1

a,1+2a,1+(1+2a),...

Answer 2

so a =1

Answer 3

\[1+3+7+15+31\] maybe?

Answer 4

??

Answer 5

first term is 1
second term is one more than twice the first one, so it is 3
third term is one more than twice 3, so it is 7
etc

Answer 6

i meant above a,1+2a,1+2(1+2a),...