For each pair:
decide which to take as independent and dependent variable
Express the relationship in function notation
Write down a possible domain for the function.
A. The number of people in a room who are smoking and the concentration of smoke in the air .
B. The number of people sharing a money prize equally and the amount each person gets.
C.the time it takes you to walk 1 kilometer and the speed at which you walk
D. The temperature outside and the amount of power needed to hear or cool a house
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