SAT Question 72a5fd28: Linear Inequalities answer and explanation with Desmos solution

Let $p$ represent the number of packages of dinner rolls that should be bought for the party. It's given that dinner rolls are sold in packages of $12$. Therefore, $12p$ represents the number of dinner rolls that should be bought for the party. It's also given that $50$ dinner rolls are needed; therefore, $12p\ge 50$. Dividing both sides of this inequality by $12$ yields $p\ge \frac{50}{12}$, or approximately $p\ge 4.17$. Since the number of packages of dinner rolls must be a whole number, the minimum number of packages that should be bought for the party is $5$.