Figure abcd has vertices a(−4, 1), b(2, 1), c(2, −5), and d(−4, −3). what is the area of figure abcd?

a.24 square units
b.30 square units
c.36 square units
d.45 square units

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