Electromagnets are devices that create a magnetic field through the application of electricity. Strong electromagnets are used to lift, move and drop heavy objects, such as vehicles. Electromagnets have advantages over permanent magnets. When the current is switched off, the electromagnet will lose its magnetism. The car will fall back to earth and we need that when we move cars in a junkyard. With a regular ( permanent ) magnet it would be much harder to do.
Answer: A. True
This is how you would write the statement:

You could also write it like this, if the one-half applies to everything:
It does represent the function because each out put has only one input
Answer:
B. X4+ 4x2 +8x is the answer
Step-by-step explanation: