I need help. 0.9x + 20=830

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 .

Solve the system of equations y= 3/2 - 1, -x+ y =-3

When 142 is added to a number the result is 64 more then 3 times the number. option 35 37 39 41