Question

let c be the function whose graph is given to the right. this graph represents the cost c of using m anytime cell phone minutes in a month for a five - person family plan.
(a) determine c(0). interpret this value.
c(0)=\square

Explanation:

Step1: Identify the value of \( C(0) \)

When \( m = 0 \) (no phone minutes used), from the point \((0,89)\) on the graph, we substitute \( m = 0 \) into the function \( C(m) \). So \( C(0)=89 \).

Step2: Interpret the value

The value \( C(0) = 89 \) means that when the number of phone - minutes \( m = 0 \) (i.e., no calls are made), the cost \( C \) for the five - person family plan is \( 89 \) dollars. This likely represents the base monthly cost of the plan (fixed cost) with no additional charges for phone usage (since minutes \( m = 0 \)).

Answer:

\( C(0)=89 \). The value \( C(0) = 89 \) represents the base monthly cost of the five - person family phone plan (the cost when no phone minutes (\( m = 0 \)) are used).