What is 17/40 as a decimal

Polygon mnopq is dilated by a scale factor of 0.8 with the origin as the center of dilation, resulting in the image m′n′o′p′q′. the coordinates of point m are (2, 4), and the coordinates of point n are (3, 5). the slope of is .

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

Find the percent error of the measurement 4 cm