What is the quadratic regression equation that fits these data?
number of seconds height (in feet)
0
11
1
13
2
13

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?