43 ÷ (-7) i need a answer quick

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 .

Don't know how to find x given these segment lengths

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog