How do you work out an interior angle of a polygom

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

How to write four times a number, minus 6,is equal to theee times the number+8 as an equqtion

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