# If f(x)= 4^[x] and h(x)=2x, how do you find f(h(1/2))?

$f \left(h \left(\frac{1}{2}\right)\right) = 4$
If $h \left(x\right) = 2 x$
then $h \left(\frac{1}{2}\right) = 2 \times \left(\frac{1}{2}\right) = 1$
If $f \left(x\right) = {4}^{x}$
then $f \left(h \left(\frac{1}{2}\right)\right) = {4}^{h \left(\frac{1}{2}\right)} = {4}^{1} = 4$