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Write an equation that models the sequence 400, 200, 100, 50, ...
A) y = 400(2x)
B) y = 50 (2x)
C) y = 1/2x + 400
D)y = 400(1/2)X-1

Respuesta :

You're starting at 400. Each time you're cutting in half. 

So the common ratio is 1/2 which means the equation is

[tex]\Large y = 400(1/2)^{x-1}[/tex]

which is in the geometric sequence format. So the answer is choice D

Answer:

he answer is D.)y = 400(1/2)X-1

Step-by-step explanation:


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