8. Han wants to buy a Fed the sale price of the phone cost. (Remember to find the cell phone for model he would like to buy at 3 int stores yg the discount Then add the tax to get the out to find the tax) Which store has the lowest final ? (pleasee help)

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