SOLUTION: Any number in the series 1 3 7 15 31 63 can be expressed in terms of the number proceeding it. If x is a number in the series, what must the number be? A. 2x + 1 B. 3(x-1) + 1

Algebra ->  Sequences-and-series -> SOLUTION: Any number in the series 1 3 7 15 31 63 can be expressed in terms of the number proceeding it. If x is a number in the series, what must the number be? A. 2x + 1 B. 3(x-1) + 1       Log On


   



Question 777096: Any number in the series 1 3 7 15 31 63 can be expressed in terms of the number proceeding it. If x is a number in the series, what must the number be?
A. 2x +
1
B. 3(x-1) + 1
C. 3x-2
D. 4x-5

Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
If x is a number in the sequence shown, the highlight%28next%29 number is highlight%282x%2B1%29,
because eacg number is 1 more than double the number before:
3=2%2A1%2B1
7=2%2A3%2B1
15=2%2A7%2B1
31=2%2A15%2B1
33=2%2A31%2B1