Which expression represent the perimeter of the rectangle one side is 3x-3, bottom is 3x-1 ,the answers are 6x+2, 12x-8, 6x-4, 12x+13

Aplane is flying at 32,500 feet. it needs to rise to 36,000 feet in two stages.• in stage 1, it rises 5% of its initial altitude of 32,500 feet.• in stage 2, it rises at a rate of 125 feet per minute.how many minutes does it take for the plane to rise during stage 2?