abduls seventh grade class is going on a field trip to a history museum there are asked students and why teachers going on the trip tickets for students are $10 each and tickets for teachers are $20 each the history museum gave the class 20% off as part of the group promotion pick all the expressions that represent the total cost of the field trip
Let's define the variables:
- S = number of students
- T = number of teachers
Now, let's write the expressions for the total cost of the field trip:
1) Total cost of student tickets before discount: 10S
2) Total cost of teacher tickets before discount: 20T
3) Total cost of student tickets after discount (20% off): 0.8(10S) or 8S
4) Total cost of teacher tickets after discount (20% off): 0.8(20T) or 16T
Therefore, the expressions that represent the total cost of the field trip are: 10S, 20T, 8S, and 16T.