in 2010, 25 parents participated in the band booster organization at king middle school. participation increased to 40 parents in 2011 and 55 parents in 2012. if the trend continues, about how many parents can be expected to participate in 2013?

i think it is 70 parents in 2013

that's not the question

I agree with your answer given.

If that's not it, what is the question?

To find out how many parents can be expected to participate in 2013, we can analyze the trend in participation over the years.

From 2010 to 2011, the participation increased by 15 parents (from 25 to 40). Then, from 2011 to 2012, the participation increased by another 15 parents (from 40 to 55).

If we assume that the trend continues and the rate of the increase remains constant, we can estimate that the participation will increase by another 15 parents from 2012 to 2013. Therefore, the expected number of parents to participate in 2013 would be:

55 parents (2012) + 15 parents (increase) = 70 parents.

So, you are correct. It is reasonable to expect about 70 parents to participate in 2013 if the trend continues.