Asequence has a ratio of 4. when n = 1, the value of the function is 16. which function models the sequence?

a: f(n)=4x4n

b: f(n)=4n+2

c: f(n)=fn+8

d: f(n)=2x4n

A.

Step-by-step explanation:

The geometric sequence has the form:

where r=4 is the common ratio and is the first term.

When we plug in these values we obtain:

We can use properties of exponents to simplify further to get:

This gives us:

The correct answer is A.

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.