R/9 = -21
Multiply by 9
r = -189
Your answer is 1.18518519
Answer:
30 marbles would be green
Step-by-step explanation:
green chance is 0.3
red chance 0.7
.3 times 100
30 green marbles is what you would expect
This is easy onystly I think you should do it your self but the answer is number b
