The school park has a circular pond with a radius of 4 yards. What is the pond's diameter?

What is the product of the radical expression. (7-2square root) (8+2 square root)

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system? a. there are infinitely many solutions. b. there is no solution. c. there is exactly one solution. d. the lines in a system cannot be parallel.