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 of x is equal to 0 point 0 0 3 x minus 1 point 2 Flight B: g of x is equal to 0 point 0 0 1 5 x plus 0 point 8 Which function represents the total of the flight times, h of x is equal to f of x plus g of x ?