Fifteen people volunteer for a park cleanup. The number of volunteers increases by 7 people each month for several months. After how many months will there be 50 volunteers?

Question

anonymous · Answer

Write an equation:
15+7x=50, where x is the number of months.
Then solve for x

anonymous · Answer

I do hope you know how I got to the equation...

anonymous · Answer

don't you like put negative 50 at the bottom of 15 and 50? or?

anonymous · Answer

Setting up the equation:
You start with 15 people, so those are constant. Since the people are increasing by 7 every month, you would add 7*# of months to 15 to get the total amount of people.

Solving the equation:
You have a target, 50 people.
15+7x=50
You want to isolate the x variable, so you can solve in two steps.
1) subtract 15 from both sides: 7x=35
2)divide by 7: x=35/7 = 5

Therefore, after 5 months, the number of people will reach 50 people.
Sorry for the long post.

anonymous · Answer

alright that made more sense. thank you for the help.