Provide an Appropriate Response $\begin{array} { | c | c | c | c | c | } \hline \mathrm { x } & 1 & 3 & 10 & 20 \\\hline 6.5 \mathrm { x } & & & & \\\hline\end{array}$

Provide an appropriate response.
-The algebraic expression 6.5x represents the total cost for x adults to attend the theater.

a. Complete the table that follows.
$\begin{array} { | c | c | c | c | c | } \hline \mathrm { x } & 1 & 3 & 10 & 20 \\\hline 6.5 \mathrm { x } & & & & \\\hline\end{array}$

b. As the number of adults increases, does the total cost increase or decrease?

A) $\begin{array} { | c | c | c | c | c | } \hline \mathrm { x } & 1 & 3 & 10 & 20 \\\hline 6.5 \mathrm { x } & 6.5 & 19.5 & 65 & 130 \\\hline\end{array}$ The total cost decreases.

B) $\begin{array} { | c | c | c | c | c | } \hline \mathrm { x } & 1 & 3 & 10 & 20 \\\hline 6.5 \mathrm { x } & 7.5 & 9.5 & 16.5 & 26.5 \\\hline\end{array}$ The total cost increases.

C) $\begin{array} { | c | c | c | c | c | } \hline \mathrm { x } & 1 & 3 & 10 & 20 \\\hline 6.5 \mathrm { x } & 6.5 & 19.5 & 32.5 & 65 \\\hline\end{array}$ The total cost increases.

D) $\begin{array} { | c | c | c | c | c | } \hline \mathrm { x } & 1 & 3 & 10 & 20 \\\hline 6.5 \mathrm { x } & 6.5 & 19.5 & 65 & 130 \\\hline\end{array}$ The total cost increases.