# math

P (in millions) = 250 x 2^( y-1990)/66

What was the approximate population of the United States in 1960?
p=250x2^-.4545

How do i figure this out from here

2^(-.4545) = 0.729763045

Put 2^(-.4545)into the Google search window, and the google caculator will do it for you.

If you want to do the entire thing, put this in the search window:

250*2^(-.4545) or even this...

250*2^((1960-1990)/66)
Nice.

2^(-.4545) = 0.729763045

Put 2^(-.4545)into the Google search window, and the google caculator will do it for you.

If you want to do the entire thing, put this in the search window:

250*2^(-.4545) or even this...

250*2^((1960-1990)/66)
Nice.

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