Which shows the algebraic representation of the phrase and its value when n = 4.2? “twenty-eight plus the product of five and a number” 28 minus 5 n; when n = 4.2 the value is 7 28 + 5 n; when n = 4.2 the value is 49 28 n minus 5; when n = 4.2 the value is 112.6 28 n + 5; when n = 4.2 the value is 122.6

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