a class has $90 to spend on a field trip. the field trip costs $2.50 per person and there will be 5 chaperones on the trip. one student used the inequality 90 greater-than 2.50 (x + 5) to find x, the number of students that the field trip budget could accommodate. which best describes the error in the student’s inequality?the expression representing the cost should be 2.50 (5 x).the expression representing the cost should be 2.50 (x + 5 x).the inequality symbol should be greater-than-or-equal-to instead of > since up to and including $90 may be spent.the inequality symbol should be less-than-or-equal-to instead of > since less than or equal to $90 may be spent.

Відповідь:

The error in the student's inequality is that the expression representing the cost should be 2.50 (x + 5), not 2.50 (x + 5 x). The correct expression represents the cost of $2.50 per person multiplied by the total number of people, which is the number of students plus the number of chaperones (5). Therefore, the correct inequality should be:

90 > 2.50(x + 5)

The inequality symbol should be greater-than since the budget cannot exceed $90. However, the student's inequality correctly indicates that the budget is greater than the cost, so the inequality symbol does not need to be changed.