Acircular pool is surrounded by a circular walkway. the radius of the pool is y − 4 and the radius of the full circle formed by the walkway is y + 4. write a polynomial that represents the area of just the walkway itself, not including the space covered by the pool. (the area of a circle is given by a = πr ^2, where r represents the radius of the circle.)

Which of these statements is correct? the system of linear equations 6x - 5y = 8 and 12x - 10y = 16 has no solution. the system of linear equations 7x + 2y = 6 and 14x + 4y = 16 has an infinite number of solutions. the system of linear equations 8x - 3y = 10 and 16x - 6y = 22 has no solution. the system of linear equations 9x + 6y = 14 and 18x + 12y = 26 has an infinite number of solutions.