Tom will set up chairs for the school talent show. he will set up 15% more chairs than the number of tickets sold and 5 for the judges of the talent show. if there were 80 tickets sold, how many chairs will tom set up? a) 73 chairs b) 87 chairs c) 92 chairs d) 97 chairs

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