The height of a sunflower plant varies directly with its age. once it has sprouted from the ground, when a sunflower is 2 week old, it is 38 centimeters tall. when it is 6 weeks old, it is 114 centimeters tall. how tall is a sunflower plant that is 3 1/2 weeks old?

The total ticket sales for a high school basketball game were $2,260. the ticket price for students were $2.25 less than the adult ticket price. the number of adult tickets sold was 230, and the number of student tickets sold was 180. what was the price of an adult ticket?

Solve the equation. 2x - 8(x+1)= 6(2x - 3)

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?