after a heavy rain, a river reached the edge of its banks. any more rain and there would be a flood after a few hours, the river went down 1/5 inch. theb another rainstorm hit and dropped 1/4 inch of rain. the river rises by 1/20 of amount of rain that falls. usr this rxpression -1/5 + 1/4/20/1 to find how the new water level compares to the riverbank. did the new rain cause a flood?

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