Final answer:
Inequalities define variable values within certain regions, requiring specific parameters for each region which must be assigned based on context or given information.
Step-by-step explanation:
To answer a student's question on inequalities, one would solve for the regions' specified conditions using inequality symbols. These symbols help represent how two quantities compare to each other. For example, given a problem involving metrics such as regions or bounds, the inequalities would define what values the variables can take within those specified areas.
Solving for region a would likely involve setting up an inequality based on the parameters given for that region. If region a is defined from point x to point y, an inequality could be represented as a ≤ x ≤ b, assigning the proper values to a and b as per the context.
In the case of region b, a similar approach would be taken. We would establish an inequality that reflects the specific instructions or limitations of region b. Without the specific context or numbers, we use placeholders; once the values for R1, R2, the radius r, and other relevant information are known, one can insert them into the inequality to define region b properly.