Amir arranged 9 photos on a bulletin board. He put the photos in rows. Each row contains the same number of photos. How many pho
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We are given
The average income, I, in dollars is
(a)
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now, we can set them equal
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we need to find youngest age
It means that we need to choose smallest value
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(b)
we are given
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M=4
(-1, -3)
x1, y1
just plug the rest in
(-1, -3)
x1, y1
just plug the rest in