The Earth’s atmosphere consists of distinct layers. The troposphere is the layer closest to Earth’s surface. The stratosphere begins just above the troposphere and extends up to 50 kilometers above Earth’s surface. The temperature increases from –51°C at the bottom of the stratosphere to –15°C at the top of the stratosphere. What is the temperature increase, in degrees Celsius, from the bottom to the top of the stratosphere?

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations