Question

6) Each day, Valerie charges her lunch account for her lunch. If the cost ofthe lunch is $3, then by how much has her lunch account been impactedover a period of 15 days? (A charge on her account would mean anegative value)Your answer

Answer 1

Let:

C(t) = charge on her account over the days

t = number of days

So:

$\begin{gathered} C(t)=-3t \\ \text{Over a period of 15 days, t=15} \\ C(15)=-3(15)=-45 \end{gathered}$

-$45