Someone PLEASE help me, Geometry isnt my strong subject PQ=2.8in

Q=311

Find the area of the Shaded region, round to the nearest tenth.

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.