Question

a phone company charges for service according to the formula $c(n)=19 + 0.07n$, where $n$ is the number of minutes talked, and $c(n)$ is the monthly charge, in dollars.
the rate of change in this equation is: select an answer
the initial value in this equation is: select an answer
question help: video

Explanation:

Step1: Identify the form of the equation

The equation $C(n)=19 + 0.07n$ is in the slope - intercept form $y = mx + b$, where $m$ is the slope (rate of change) and $b$ is the y - intercept (initial value).

Step2: Find the rate of change

In the equation $C(n)=19 + 0.07n$, the coefficient of $n$ is the rate of change. So the rate of change is $0.07$.

Step3: Find the initial value

In the equation $C(n)=19 + 0.07n$, the constant term is the initial value. So the initial value is $19$.

Answer:

The rate of change: $0.07$
The initial value: $19$