please answer all i only have 15mins

QUESTION 18 10 points Save Answer SLM: A construction company decided to purchase a concrete mixer truck for $75,000 with a trade-in of their old mixer. The old mixer has a trade-in value of $7,000. The new mixer will be kept for 15 years before being sold. Its estimated salvage value at that time is expected to be $5.000. Assume interest to be 12%. Determine the 12th year BVB by Straight Line Method. QUESTION 19 10 points Save Answer DDBM: A construction company decided to purchase a concrete mixer truck for $75,000 with a trade-in of their old mixer. The old mixer has a trade-in value of $7,000. The new mixer will be kept for 15 years before being sold. Its estimated salvage value at that time is expected to be $5,000. Assume interest to be 12%. Determine the 8th year BVB by Double Declining Balance Method (round-off k to 4 decimal places). QUESTION 20 10 points Save Answer DBM: A property that is book-depreciated over a 10-year period by the Declining Balance Method has $19.856.99 book value on the 4th year. Determine the assumed salvage value of the property (round-off k to 4 decimal places)