Mr. Hibbard correctly substituted \( x = 14 \) into the expression \( 0.01 \cdot 2^{14} \) to find the value of the penny after 14 days. The calculation would be:
\[ 0.01 \cdot 2^{14} = 0.01 \cdot 16384 = 163.84 \]
So the correct response is:
Mr. Hibbard substituted x = 14 into the expression .01⋅2^14=163.84.