1. The problem involves analyzing the expression inside a triangle for question 1a with terms 40 and 5x. 2. Assuming the triangle represents an inequality or an expression involving these terms, let's clarify the context: if these terms are added or compared, or if the triangle indicates absolute value or a geometric shape. 3. If inside a triangle means the terms form a geometric triangle, check the triangle inequality or expression. 4. If inside a triangle is symbolic, for example absolute value, $\triangle$ might represent $|\cdot|$; then $|40 + 5x|$ is the expression. 5. Without additional context, the best interpretation is that 40 and 5x are terms inside an absolute value or summation in a triangle symbol.