Andre's garden has been infested by weeds. he noticed on the first day that there were 3 weeds and on the next day there were 50% more weeds.
a. write an equation describing this situation
b. find out how many weeds there are in the garden

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