To find the total cost of a field trip, use the equation c = 4s, where s is the number of students and c is the cost of the field trip. How much will it cost for 15 students to attend the trip?

c = 4*15

so 15*4=3 15x3=56

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To find the cost of the field trip for 15 students, we can use the equation c = 4s, where c is the cost of the field trip and s is the number of students.

Step 1: Substitute the number of students (s) into the equation.
c = 4s

Step 2: Replace s with the given number of students.
c = 4(15)

Step 3: Simplify the expression.
c = 60

Therefore, it will cost $60 for 15 students to attend the field trip.