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I'm not for sure if this is what you meant though sorry
10y + 20 is an equivalent expression
The x and y coordinates of point S are increased by three to get to the midpoint.
(2,1) ----> (5,4)
To get to point t increase the coordinates by three again.
(5,4) -----> (8,7)
answer: (8,7)
(10)2 x (6)3 = 38
It will cost $38 for 2 adult's and 3 children's tickets.
