Carey measured a city park and made a scale drawing. in real life, the soccer field is 99 meters long. it is 33 millimeters long in the drawing. what scale did carey use? its gives me 1 millimeter = ? meters

99/33= 3

All you need to do is divide the real soccer felid by the scale drawing. Don't let the meters and the millimeters confuse you- it will still give you the right scale even though they are different units of measure. 

1 millimeter= 3 meters

I hope this helps!
~kaikers