I need help with these type of problems

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

Is a square always, sometimes, or never a parallelogram

Find the length of the radius of a circle with the center at -7+2i and a point in the circle at 33+11i