AIR MATH

Math Question

7. Marcy has earned 18 rewards points at the movie theater and will earn 3 points for each additional movie. Which equation represents the relationship between \( y \), the total points, and \( x \) the number of movies?
\[
\begin{array}{l}
\text { A. } y=18+3 x \\
\text { 2. } y=3 x-18 \\
\text { C. } y=18-3 x \\
\text { D. } y=18 x+3
\end{array}
\]

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