Final answer:
The number of times the code must be repeated depends on the width of the canvas, which is not provided. If hypothetically assuming a canvas width of 400 pixels, Tracy would need to move 8 times to reach the right edge.
Step-by-step explanation:
The question 'If Tracy starts on the left edge of the canvas and moves forward 50 pixels, how many times will this code need to be repeated to have Tracy reach the right edge of the canvas?' is asking us to determine the number of iterations required for a movement command in a programming context to cross a given distance. To answer this, we need the width of the canvas in pixels. Once the width is known, we would divide it by the movement distance (50 pixels) to find out how many 50-pixel movements are needed to reach the right edge. Since the width of the canvas is not provided, we are unable to give a specific answer. However, if we assume the canvas is 400 pixels wide (as an example), then Tracy would need to move 400/50 = 8 times to reach the right edge.