Expand 3(x + 4)
Don’t really understand it pls help

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?