To represent Maria's savings account situation with an equation in the form \( px + q = r \), we can define the variables and constants involved.
Let:
- \( x \) be the number of weeks Maria saves.
- \( p \) be the amount she saves each week, which is $19.
- \( q \) be the initial amount in her savings account, which is $50.
- \( r \) be the target amount she wants to reach, which is $259.
Based on this information, we can set up the equation:
\[ 19x + 50 = 259 \]
In this equation:
- \( p = 19 \)
- \( q = 50 \)
- \( r = 259 \)
Now we have the equation in the required form \( px + q = r \).