A jet ski depreciates at 11% of its original value each year. If the jet ski was $8,000 at its time of purchase, what is the value of the jet ski after 5 years?

Question

booksforlife · Answer

@SaiyanSparta could you help me with this one?

saiyansparta · Answer

Since the ski depreciates at 11% of its original value each year, after one year, it will be at 100-11 = 89%, or 0.89 of its value from the previous year. Therefore, in 5 years, it will be $$(0.89)^5$$ of its original value. Therefore, the value is $$(0.89)^5\cdot \$ 8,000 \approx  \$ 4,467.25 $$

booksforlife · Answer

Thank you again @SaiyanSparta! This really helped a lot! :)

saiyansparta · Answer

Anytime! :)

booksforlife · Answer

Could you check my answer on this one?
1/36=6^(x-3)
1/6^2 = 6^(1)(x-3)
6^-2=6^(x-3)
-2=x-3
-2+3=x-3+3
1=x

booksforlife · Answer

@SaiyanSparta sorry if I'm asking a lot. I've been stuck on these for 3 days.

saiyansparta · Answer

Yup that seems about right! :)