Question

HELP!!!
Which graph is the sequence defined by the function f(x) = 3(2)x-1?

Answer 1

The correct answer is the 4th graph. (1,3 - 2,6 - 3,12 - 4, 24 - 5, 48)

just took the test.

Explanation:

Answer 2

`f(x)=3(2)^(x-1)\\\\f(1)=3(2)^(1-1)=3(2)^0=3(1)=3\to(1,\ 3)\\\\f(2)=3(2)^(2-1)=3(2)^1=3(2)=6\to(2,\ 6)\\\\f(3)=3(2)^(3-1)=3(2)^2=3(4)=12\to(3,\ 12)\\\\f(4)=3(2)^(4-1)=3(2)^3=3(8)=24\to(4,\ 24)\\\\f(5)=3(2)^(5-1)=3(2)^4=3(16)=48\to(5,\ 48)`