Let f(x) = x − 2 and g(x) = x2 − 7x − 9. find f(g(− (1 point)

−21
−3
3
21

Hi my sisters and brothers can tell me the answer because i don’t understand the question

What is the solution of the systems of equations? y=2/3x+3 x=-2

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?