A$1045 washing machine in a laundrymat is depreciated for tax purposes at a rate of $95 per year. find a function for the depreciated value of the washing machine as it varies with time. when does the depreciated value reach $0?

Let's go through the years

1045 - 95   <--- 1 year    1045 - 95(1)
1045 - 95 - 95  <--- 2 year  1045 - 95(2)
1045 - 95 - 95 - 95  <--- 3rd year  1045 - 95(3)
1045 - 95 - 95 - 95 - 95 <---- 4th year  1045 - 95(4)
1045 - 95 - 95 - 95 - 95 - 95  <--- 5th year  1045 - 95(5)
thus
1045 - 95(t)   <--- after "t" years, where t > 0

so the price P = 1045 - 95t

when does it reach 0?  when P = 0