Select the intervals that must be tested. x < 5 x < 3 3 < x < 5 x > 3 x > 5

If jm equals 5x -8 and lm equals 2x -6 which expression represents jl

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

Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.