A rectangular room is 4
times as long as it is wide, and its perimeter is
40
meters. Find the dimension of the room.

34 cup. a serving of vegetable soup is 23 cup. the restaurant sold 20 servings of chicken noodle soup and 18 servings of vegetable soup. how many more cups of chicken noodle soup did they sell than cups of vegetable soup?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°