Will give brainest categorize the graph as liner

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

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

If f(x)=3 over x+2 - square root x-3 then f(7)=