1) The gradient tool is about half way down the palette and to the right. It looks like a square that is shaded at the right side and slowly turns white. The pen tool is towards the bottom of the palette to the which looks like a fountain pen. The tool you would use to make shape of any color would be the rectangle tool. It is one level below the pen tool but to the right side of the palette.

2) Half of the image would be the color you choose and slowly fade to white. Because the color setting is on the transparent setting. The shape setting would be set to straight. The opacity would be dark because the setting is at 100%.

3) You would click on the icon that is to the right of the tool bar and than when the options come for that setting comes up click the setting for the gradient that is a solid color that transitions from a dark color to light color and than to small checkers.

4) You have made vector art.

5) yes it is a closed path.

6) Select the first tool in the tool bar that is to the right. The color of the rectangle will be black.

7) To make a circle you would click and hold on the rectangle making tool and the option to make a circle will come up on the screen.

8) You would use 300 dpi.

9) Dots per inch

10) Both A and B will be the same size because image A is just zoomed out of the image than image B.