Question

Which of the following is an infinite series?

A. 4 + 8 + 16 + 32
B. 2 − 6 + 18 − 54 + . . .
C. 3, 13, 23, 33, . . .
D. 3, –6, 12, –24, 48

Given the recursive formula below, what are the first 4 terms of the sequence?


A. 17, –6, –3, 0
B. 17, 22, 39, 56
C. 17, 39, 105, 303
D. 17, 63, 201, 615

Answer 1

Answer:

for the first question it would be A. 4+8+16+32 because infinite series are such as :

9,18,36,72,144,288

10,20,40,80,160,

so basically its multiplying *2

I cant do #2 without seeing the formula