Sue is a software engineer. she wants to create a large scale drawing of a processor inside a cell phone. the processor is a square chip 9 mm 9 mm9, start text, space, m, m, end text on each side.
draw the processor such that
1
11 unit on the grid below represents
1
2
mm
2
1

mmstart fraction, 1, divided by, 2, end fraction, start text, space, m, m, end text.

Amountain climber starts a climb at an elevation of 453 feet above sea level at his first rest stop he has climbed 162 feet and by his second rest stop he has climbed another 207 feet its getting late in the day so the climber starts his way down if the climber desends 285 feet how much does he need to ascend or descend to return to the original starting point