Answer:
3:6
3x2=6
Scale factor = 2
Step-by-step explanation:
18). y = -x
19). y = -2x + 4
16 year olds had the higher ratio of black belts to brown belts.
15 year olds: 8/28 students had black belts
8/28 = 28.6% had black belts
16 year olds: 10/27 students had bald belts
10/27 = 37.0% had black belts
