A study compared the number of users
x (in millions) and the number of connections between users y (in millions) of
a social network. The results are shown in the following table.
Use a graphing calculator to find
a model for the data and answer this question by giving values for a, b, and c,
where a, b, and c are constants in the equation y = ax2+bx+c. Leave
all commas out of large numbers and round all three answers to the nearest