Question

The seventh grade math classes are going on a field trip. the field trip will cost $7 per student. write an expression to find the cost of the field trip for s students. what is the total cost if 26 students go on the trip?

Answer 1

Let x be the number of students going 
Let y be the total cost 

Then, 
7x=y 
7(26)=y 
$182=y 

Therefore, the total cost would be $182 for 26 students to go. 

Hope I helped :) 

Answer 2

Cost = 7s; where s is the number of students who paid.

Plugging in 26:

cost = 7 * 26
cost = 182

Hope this helps!