Answer:
6x + 4
Step-by-step explanation:
I think your question is missed of key information, allow me to add in and hope it will fit the original one. Please have a look at the attached photo.
We need to find the total cost
Given that:
The cost to the museum and visit the mummy : 3(x+1)
Cost for 4 friend without seeing the mummy: x
=> The total cost: 3(x+1) + x = 3x+ 3+x = 4x + 3
Six friend pay x for admission and four friends pay 1 for the exhibition
The cost to the museum for 2 people who dont watch the exhibition: 2x
The cost to see the mummy exhibition for four friends is: 4* (x+1)
=> the total cost: 2x+ 4* (x+1) = 2x + 4x+4 = 6x + 4
