The length of time in hours of two airplane flights are represented by the following functions, where x is the number of miles for
the flight:
flight a: f(x) = 0,003% -12
flight b: g(x) = 0,0015% + 0.8
which function represents the total of the flight times, h(x) = f(x) + g(x)?
h(x) = 0,0015% - 2
h(x) = 0,045% -0,4
h(x) = 0.0045x-04
h(x) = 0.0045x-2

The equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true? a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of 5/9 degree celsius. a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit. a temperature increase of 5/9 degree fahrenheit is equivalent to a temperature increase of 1 degree celsius. a) i only b) ii only c) iii only d) i and ii only