step-by-step explanation: for the student to be considered for the tutoring or extension activities, his/her score must be 20 points lower or higher than the average.
the average is given as 105, that means:
minimum score to be considered = 105 - 20 = 85
maximum score to be considered = 105 + 20 = 125
if p represents the performance of a student, then this inequality will be represented as follows:
85 ≤ p ≤125