Question

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

Answer 1

None of those choices seem correct.
This formula will produce the results:
y = 400 / 2^n

Answer 2

the correct answer is c the other guy is wrong