What does it mean to attend to precision when modeling in mathematics?

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0

Factor and solve to find roots x squared -x - 90 =0

The trapezoid is composed of a rectangle and two triangles. what is the area of the rectangle? what is the total area of the triangles? what is the area of the trapezoid? a) 48 cm2; 32 cm2; 80 cm 2 b) 48 cm2; 16 cm2; 64 cm 2 c) 128 cm2; 32 cm2; 160 cm 2 d) 128 cm2; 16 cm2; 144 cm 2