Answer:To represent the expected student enrollment for next year, we can use the expression: S + (8.5/100) * S In this expression, S represents the current number of students enrolled in the school. To calculate the expected enrollment for next year, we multiply S by 8.5/100 (which represents 8.5% as a decimal) and then add the result to the current enrollment. For example, if the current enrollment is 500 students, the expression would be: 500 + (8.5/100) * 500 Simplifying this expression, we get: 500 + 0.085 * 500 = 500 + 42.5 = 542.5 So, the expected student enrollment for next year would be 542.5 students. In summary, the expression that represents the expected student enrollment for next year is: S + (8.5/100) * S, where S represents the current number of students enrolled in the school.