2/5
Step-by-step explanation:
There are 15 total marbles in the bag. 12 are blue, with only 6 made from plastic. 6/15 reduced is 2/5
Answer
As b increases, b-1 will increase as well
Step-by-step explanation:
for example, if b=5, b-1 will equal 4
if b=6, b-1 will equal 5