9 and 3/8 is 75/8 as a mixed #.
Move everything around. d+1.6=9.7. d=8.1.
Since 10 out of 14 marbles are green, the probability of selecting a green marble is 10/14=0.714.
Similarly, the probability of selecting a red marble would be 4/14.
Answer: 0.714
I believe it is D, stratified random sampling.
Hope this helps!!
The answer is a. b>-2 because
6b<24
b< 24/6
b<4
And
4b+12>4
4b>4-12
4b>-8
b>-8/4
b>-2
