$1.$ Hwan also knows the rent will be $$45,000$ in Year $1$ and will increase by at least $4$ percent per year.

Project the rent expenses as follows:

a$.$ Project the expenses for rent for Years $25($cells D$19$:G$19)$ using a Growth Trend extrapolation.

b$.$ Use $1\mathrm{.}04($a $4$ percent increase$)$ as the step value.