Since 1990, the number of new books published
each year has been growing at a rate that can be
approximated by a quadratic function. The table
shows the number of books published in the
United States for selected years. Use the
regression feature on your calculator to
determine the quadratic which best fits the
data. Then, estimate the number of books in
2017. (Hint: 2017 represents when x = 27)
Years (1990=0) Books Published (1000's)
46.7
49.2
3
49.8
4
51.7
5
62.0
6
68.2
7
65.8
9
102.0
10
122.1
0
2
Oy=1.0622 - 3.57x + 49.8726150
o y = 1.0522 - 3.682 + 49.9 715990
Oy=1.04.c– 3.51x + 49.41 712800
y = 1.0522 - 3.752 + 49.6 713800