An 8ft length of crown molding costs $14. How much will it cost to buy 96 ft of crown molding?
1 answer:
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remember that to put a number in scientific notation is necessary to have the first digit of the number different to 0, so
to calculate the order of magnitude, if the number is greater than 3.16, we assume it as a 10, so in this case as 7.654 > 3.16 we get that the order is
So the order is 10^-3
Let plug the variable into the equation.
We can conclude that this is incorrect because
does NOT equal 
The correct answer would be:
; 
; or
or 
All
of these are correct answers.
We can conclude that this is incorrect because
The correct answer would be:
All
