What is the 21st term of an arithmetic sequence with terms a6=50 and a11=85?

1. 125
2. 155
3. 185
4. 205

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 .

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅

Determine the standard form of the equation of the line that passes through (-2,0) and (8,-5)