A bag has 4 balls: 1 red (R), 1 green (G), 1 yellow (Y), and 1 blue (B).

You randomly choose a ball. What is the sample space?

A. {R, B, Y,0)

B. {R}

C. {G}

D. {R, G, Y, B}

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