On a grid, 2/3 of the squares are shaded with a color. One fourth of all the squares on the grid are shaded blue. What fraction of the shaded squares are blue squares?

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step-by-step explanation:

answer:

at time x=0 we have 1000, at time x=1 we have 2000, at time x=2 we have 4000.  

so that's an initial value of 1000 and a ratio of 2,

y = 1000 (2^x)

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