I understand the basic formula but I’ve tried everything for A and nothing seems to work. Could someone please tell me what A is supposed to mean? Thank you

If the class was going to get a class pet and 5 picked fish and 7 pick bird and 8 picked rabbits have many students were in the

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

Find the value of x for which line a is parallel to line b