Question

If f(x) = 6(9)^x then f(1/2) =?

Answer 1

F(x) = 6(9)^x

f(1/2) = 6(9)^(1/2)

f(1/2) = 6(9)^(0.5)

f(1/2) = 6*(9^0.5)               9^0.5 = √9 = +3 or -3.

f(1/2) = 6*3 = 18          or       6*-3 = -18

f(1/2) = 18   or   -18     

Hope this helps.