Apentomino is made up of five squares where two squares are joined along an entire side. two pen- tominos are the same if they can be matched by turning or flipping. how many different pentomino shapes are possible?

There are 12 such shapes. One can start with two squares, adding squares around the edge and rejecting shapes that have been previously seen. Repeating until you have 5 squares results in 12 distinct shapes.

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2 shapes are possible with 3 squares: L, I

5 shapes are possible with 4 squares: L, I, N, T, O

the reason why your question keeps getting deleted because this is not a school related question : )

i will answer your question though.

i never tried church's

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3