26 cartons.
355 books / 14 books per carton = 25.36
Because you cannot ship a half carton, you would need a total of 26.
Answer:
[0, ∞)
0≤y<∞
Step-by-step explanation:
The range is the possible values that y can take
y goes from 0 to positive infinity
[0, ∞)
0≤y<∞
There are 14 sections with a score higher than 5. And there 20 in total. The probability is:

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.
_____
2 shapes are possible with 3 squares: L, I
5 shapes are possible with 4 squares: L, I, N, T, O
the answer is in the picture