$1.$Making depreciation expense as a percent of net PPE is a common way of modeling straight$-$line depreciation. Does it really model straight$-$line depreciation? $[$Hint: Consider the case in which the capex growth rate is $-100\%.]$

a$.$Yes

b$.$No

$2.$In fact, does the depreciation expense ever become $$0$ if depreciation expense is made a percent of net PPE?

a$.$Yes

b$.$No

$3.$If depreciation expense is made a percent of net PPE, then the depreciation expense for a single asset

a$.$increases over time

b$.$decreases over time

$4.$If depreciation expense is made $1/$N of net PPE, then the depreciation is

a$.$slower than straight$-$line depreciation with a useful life of N years.

b$.$faster than straight$-$line depreciation with a useful life of N years.