What is the slop between (2,7) and (10,22) on fraction form

Apark is in the shape of a rectangle. the park authorities are planning to build a 2-meter-wide jogging path in the park (shown as the shaded region in the image). what is the area of the jogging path? plz

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

Combine like terms to make a simpler expression 3z+z