Prime factorization is finding which prime numbers multiply together to make the original numbers. Since the prime factors have been given, using a calculator to multiply the prime factors to find the prime factorization is no longer needed.
I believe that would be -4.50 for problems like this you subtract then add the negative sign in front i'm surprised you are in high school i did this in 6th grade
If you do 60% then you put the percent two times over the the left so 0.60 then you would do 0.60 times 50 so that would be 30. 30 of the members must vote. Hopefully that helped?