The first one because for every output there is only 1 input
There is 150% increase in the number of volunteers.
Step-by-step explanation:
Given,
Old number of volunteers = 20
New number of volunteers = 50
Change = New value - Old value
Change = 50 - 20 = +30
The positive sign indicates the increase.
Percent increase = 

There is 150% increase in the number of volunteers.
Keywords: percentage, subtraction
Learn more about percentages at:
#LearnwithBrainly
Hello!!
Grab a calculator and calculate 6/11. You'll get 0.54545454545454, which can be written as 0.54 with a bar over the 54.
Hope this helps!! Let me know if you have ANY questions.
Answer:
Jake:y
grandma:6y
cousin:y+5
the sum of all their ages:8y+5
Step-by-step explanation:
given Jake:y
His grandma is 6 times his age
so
grandma:6y
His cousin is 5 years older than
him.
so
cousin:y+5
the sum of all their ages is
y+6y+y+5
8y+5