What are the multiples of 3 and 4 between 1 and 30

6(2x+y)+2(x+4y) how can i solve this

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

Which diagram best shows how fraction bars can be used to evaluate 1/2 divided by 1/4?