Please explain this question below:

explain the meaning of y=f(h(x))

From the following chart choose two of the four function pairs. i} Explain the meaning of 3:: HP; (412]) ii) Give a real life example of y: f{h{w}} ; Milage is a function of time l:l lConsumption is a function of 1ll'elo-cit'lr EEarnings isa function of Time lCost is a function of Consumption Fuel Consumption is a function of Milage Cost is a function of Consumption Interest is a function of Earnings Interest is a function of Cost