Abag contains 56 marbles ,some red ,some yellow ,some blue, there are half as many red as blue and eight more yellow than red .how many of each color are there?

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?

George is putting trim around his rectangular deck, including the gate. he will need 44 feet of trim to do the entire deck. if the deck is 13 feet long, how wide is the deck?

Y= 4x + 3 y = - 1 4 x - 5 what is the best description for the lines represented by the equations?