Please help with 3-7 and 3-8. My professor hasn't lectured on any of this yet and I'm not good at teaching myself. I need to see examples first.

QS 3-7 Adjusting prepaid (deferred) expenses P1 For each separate case, record the necessary adjusting entry. a. On July 1, Lopez Company paid $1,200 for six months of insurance coverage. No adjustments have been made to the Prepaid Insurance account, and it is now December 31. Prepare the year-end adjust- ing entry to reflect expiration of the insurance as of December 31. b. Zim Company has a Supplies account balance of $5,000 at the beginning of the year. During the year, it purchases $2,000 of supplies. As of December 31, a physical count of supplies shows $800 of supplies available. Prepare the adjusting journal entry to correctly report the balance of the Supplies account and the Supplies Expense account as of December 31. QS 3-8 Accumulated depreciation adjustments P1 For each separate case below, follow the three-step process for adjusting the Accumulated Depreciation account at December 31. Step 1: Determine what the current account balance equals. Step 2: Determine what the current account balance should equal. Step 3: Record the December 31 adjusting entry to get from step 1 to step 2. Assume no other adjusting entries are made during the year. a. Accumulated Depreciation. The Krug Company's Accumulated Depreciation account has a $13,500 balance to start the year. A review of depreciation schedules reveals that $14,600 of depreciation expense must be recorded for the year. b. Accumulated Depreciation. The company has only one fixed asset (truck) that it purchased at the start of this year. That asset had cost $44,000, had an estimated life of five years, and is expected to have zero value at the end of the five years. C. Accumulated Depreciation. The company has only one fixed asset (equipment) that it purchased al the start of this year. That asset had cost $32,000, had an estimated life of seven years, and is expected to be valued at $4,000 at the end of the seven years