Answer:
??????????????????????????????????????
Answer2
Step-by-step explanation:sorry I wish I knew
Answer:
x=15
Step-by-step explanation:
6x+15=7x
15=x
I really don’t remember how to do these
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