Given f(x)= -3x² + 9x, what is the value of f(-2)

The vertices of a rectangle are given in the columns of the matrix . if is found to perform a transformation, what are the coordinates of the transformed rectangle? (0, 0), (0, –3), (–3, –3), (–3, 0) (0, 0), (0, 3), (3, 3), (3, 0) (0, 0), (0, 3), (–3, –3), (–3, 0) (0, 0), (0, 3), (–3, 3), (–3, 0)

What is the absolute value of the complex number -4-sqrt2i

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.