The graph of the functions y = f(x) is shown. Which Input value corresponds to f(x) = 4?
A-6
B-1
c. 1
D.2
E. 4
F. 7
G. 9

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212