I need this answered, please. Find the discriminant and use it to determine the number of real solutions of the equation. If the equation does not have real solutions, tell whether they are rational or irrational. Do not actually solve the equation.
x^2+8x+16=0

Cynthia takes her dog to the park every 2 days. she bathes her dog every 7 days. if she took her dog to the park and bathed him today, how long will it be until she does both on the same day again?

Acircle has a radius of 12.6cm what is the exact length of an arc formed by a central angle measuring 120

Adolphin is swimming with her friend. the dolphin jumps to a height of 4.54.54, point, 5 meters above the surface of the water as her friend swims 9.89.89, point, 8 meters directly below her. what is the position of the dolphin's friend relative to the surface of the water? meters