[16-(3x2)]x3 pls help

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.

What is the value of the product (3-2i)(3+2i)?