How many pieces are in this graph?

What is the missing constant term in the perfect square that starts with x^2 -20x

With alll of except for the 2 that i did already

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f