Math

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I'm having trouble on the 2nd part of the question below.
The value of a 1962 Mickey Mantle baseball card went from $900 to $700.
a. Write an integer to describe the change in value in the card. ( I know this would be -200)
b. Use the abolute value of the integer to write an absolute value statement describing the situation. (I know the absolute value of -200 is 200 but don't know how to write an absolute value statement describing the situation.)
Thanks...

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