Question

worried about going over his storage limit, harry monitored the number of undeleted voicemail messages stored on his phone each day. according to the table, what was the rate of change between wednesday and saturday? round your answer to the nearest tenth. voicemail messages per day

Explanation:

Step1: Identify the formula for rate of change

The rate of change formula is $\frac{y_2 - y_1}{x_2 - x_1}$. Here, $y$ represents the number of voicemail messages and $x$ represents the day. Let Wednesday be $x_1 = 1$, $y_1=21$ (assuming we count days starting from Wednesday as day 1 for the interval between Wednesday and Saturday), and Saturday be $x_2 = 4$, $y_2 = 11$.

Step2: Substitute values into the formula

Substitute the values into the formula: $\frac{11 - 21}{4 - 1}=\frac{- 10}{3}\approx - 3.3$

Answer:

$-3.3$