Answer:
Cost of each student ticket is, $4.35
Explanation:
Given the statement: Elise pays $21.75 for 5 student tickets to the fair.
Unit rate defined as the rates are expressed as a quantity of 1, such as 3 feet per second or 6 miles per hour, they are called unit rates.

Given total cost paid by Elise = $21.75
Number of students = 5
then;
Unite rate per student =

Therefore, the cost of each student ticket is, $4.35