HELP ASAP How much would your new car be worth after 7 years if it was originally worth $30,000 and depreciates at a rate of 5%?

If the value of a car, after 6 years is $29,000 and it depreciates at a rate of 7%, what was it worth when it was new?

Joe buys a Eleven-year-old car for $10,400. When the car was new, it sold for $30,000. Find the rate of depreciation.

Madi bought a used car for $15,000. When this car was new, it sold for $45,000. If the depreciation rate is 5% per year, approx. how old is the car? years (Round to nearest whole year)