Question

The ordered pairs (1, 3), (2, 9), (3, 27), and (4, 81) represent a function. Write a rule that represents this function.

Answer 1

F(x)=3^x
because: when x=1; f(x)=3^1=3 (pair (1;3)
x=2; f(x)3^2=9 
x=3; f(x)=3^3=27
x=4; f(x)=3^4=81