Which input value produces the same output value for the two functions?
-3
The tables represent the functions f(x) and g(x).
х f(x)
х g(x)
-3 -5
-13
-2 -3
-2 -9
-1
-1
-1
-5
0
1
0
-1
1
3
1
3
2.
5
2
7
O x = -3
O x= -1
Ox=0
O x = 1

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?