What is the slope to 12

This is about circle theorems. someone asap : (

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? \ 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?