Math
posted by wendy
Betty decides to support local artists by hanging their artwork in her shop. When decorating the coffee shop, Betty comes across the following formula for placing pictures on her walls: 1/3 a12+ 2/3awhere a equals the number of pictures that she would like to hang.
What is the value of this expression when a space equals space 9?

Reiny
"when a space equals space 9"
you mean: a = 9 ??
Why not just plug in a = 9 and evaluate ?
btw, I have no clue what that formula is supposed to represent?
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