A group of friends decided to divide the $800 cost of trip equally among themselves. When two of the friends decides not to go on the trip, those remaining still didvide the $800 cost equally , but each friends share of the cost increase by $20. How many friends were in the group orginally?

10 friends

Step-by-step explanation:

Let the initial number be x friends so that when 2 decide not to go, the remaining will be x-2. The final cost per person minus initial cost per person is $20.

Initial cost per person was

Final cost per person is

x=-8 or 10

Therefore, the original number was 10 friends

(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)

14

step-by-step explanation: