country c imposes a two-tiered tax on imported cars: the first tier imposes a tax of 12% of the car's price up to a certain price level. if the car's price is higher than the first tier's level, the tax on the portion of the price that exceeds this value is 8%. if ron imported a $14,000 car and ended up paying $1,440 in taxes, what is the first tier's price level?