The cost of a ticket to an amusement park is $42 per person. For groups of up to 8 people, the cost per ticket decreases by $3 for each person in the group. Marcos' ticket cost $30. Write and solve an equation to find the number of people in Marcos' group.
5 people! when you have 1 person, the total is 42 so every time you get another person, you subtract the total by 3. counting down you get to 5 people when you get to 30 dollars. i hope i explained this right!
