help explain plz no answer tho

4⋅2^−4+5

2^-4 means 1/(2^4), so that you have:

4 x [ 1/(2^4) ] + 5

$4\times2^{-4}+5$

=$\frac{4}{16}+5$

=$5\frac{1}{4}$

or $\frac{21}{4}$