Question

In 2012, Katie had 74

Instagram followers. By
2015, she had increased
to 227 followers. Find the
rate of change,​

Answer 1

Rate of change is increase of 51 followers per year.

Explanation:

Given:

Number of followers in 2012 = 74

Number of followers in 2015 = 227

Therefore, increase in followers = 227 - 74 = 153

Duration for the change = 2015 - 2012 = 3 years

Rate of change of followers is given as:

`\textrm{Rate of change}=(Increase)/(Duration)=(153)/(3)=51`

Therefore, rate of change is increase of 51 followers per year.