free points only if you go to a question ive answered and give me brainliest be honest i need to level up

Which order pair could be removed so that the set of order pairs is a function

Aquadratic function f(x) has a turning point at (3,-7). what is the turning point of -f(x)?

An an average person has 6×10 by the power of two as many red blood cells as white blood cells a small sample of the blood has 7×10 by the power of three white blood cells about how many red blood cells are in the sample