The bill total would be $140 because there are seven people (6 friends+Jacob) and each payed $20. (7)(20)
If f(x) is an inverse of g(x),
when
f(x)=y
g(y)=x
aka
f(g(x))=x
g(f(x))=x
basically, the values should be swiched
example
f(x)=
(1,2)
(2,3)
(4,5)
then g(x)=
(2,1)
(3,2)
(5,4)
Answer:
1 100
2 300
Step-by-step explanation:
13x = 39 can replace 3x + 5y = 59 in the original system and still produce the same solution.
