Can someone please tell me the domain and Range of this graph?

What is the approximate total length of iron edging needed to create the square frame and the two diagonals?

Is fgh ~ jkl? if so, identify the similarity postulate or theorem that applies.

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?