SAT Question 00ec9102: Linear Inequalities answer and explanation with Desmos solution

Choice A is correct. It's given that each container costs $$1.87$ and $c$ represents the number of containers. It follows that $1.87c$ represents the cost, in dollars, of $c$ containers. It's also given that each roll of tape costs $$2.40$ and $t$ represents the number of rolls of tape. It follows that $2.40t$ represents the cost, in dollars, of $t$ rolls of tape. Therefore, the total cost, in dollars, for $c$ containers and $t$ rolls of tape is $1.87c+2.40t$. It's given that Leo has $$15$. It follows that the total cost, in dollars, must be less than or equal to $15$. Therefore, the inequality $1.87c+2.40t\le 15$ represents this relationship.