Answer:
1.) 60 red marbles, 120 blue marbles, 30 green marbles, and 90 yellow marbles = use 0-2 to represent yellow marbles and 3-9 to represent other marbles
2.) 16 red marbles, 32 blue marbles, 32 green marbles, and 80 yellow marbles = use 0-4 to represent yellow marbles and 5-9 to represent other marbles
3.) 20 red marbles, 30 blue marbles, 10 green marbles, and 40 yellow marbles = use 0-3 to represent yellow marbles and 4-9 to represent other marbles
4.) 30 red marbles, 40 blue marbles, 20 green marbles, and 10 yellow marbles = use 0 to represent yellow marbles and 1-9 to represent other marbles
Step-by-step explanation: 5/5 on plato!