IfA=−3n+2 andB=5n−7, what is the value of A−B, in simplest form?

Either -4n or 0n but most likely -4n

the answer is b.)

< 1=< 2

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents