Christine works as a tutor for s10 an hour and as a waitress for ss an hour. this month, she worked a combined total of 90 hours at her two jobs. lett be the number of hours christine worked as a tutor this month: write an expression for the combined total dollar amount she earned this month

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