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The ordered pairs (1, 2), (2, 4), (3, 8), (4, 16) and (5, 32) represent a function. What is a rule that represents the function?


a: y=x^2

b: y=2x

c: y= 2^x

d: y= x+2


The ordered pairs (1, 3), (2, 6), (3, 9), (4, 12) and (5, 15) represent a function. What is a rule that represents this function?


a: y=x^3

b: y= 3^x

c: y=3x

d: y= x+3