If Carla ordered 3 boxes of 100 beads she wanted more than 300 beads. The problem omitted the information that she also ordered 1 box of 10 beads and 4 boxes of single beads. In any case, the other 2 options are less than 300.
Hi! So pretty much to find slope of a triangle you are going to use rise/run. The height being 12 and the length is 14. You get 12/14. Simplified is going to be 6/7. :)