Question

worried about going over her storage limit, sophia monitored the number of undeleted voicemail messages stored on her phone each day. voice mail messages on sophias phone according to the graph, what was the rate of change between friday and saturday? voicemail messages per day

Explanation:

Step1: Identify values on Friday and Saturday

On Friday, the number of voicemail messages is 3. On Saturday, it is 2. The time difference between Friday and Saturday is 1 day.

Step2: Calculate rate of change

The formula for rate of change is $\frac{\text{Change in value}}{\text{Change in time}}$. The change in value is $2 - 3 = -1$, and change in time is $1$ day. So rate of change is $\frac{-1}{1} = -1$.

Answer:

-1