60 items were for sale because you need to add together the amounts that were sold plus what was left over, giving you everything that they had for sale.
Answer:

Step-by-step explanation:

Answer:
19/42 or .4523809524 pasta eaten
Step-by-step explanation:
2/7+1/6=19/42 or .4523809524
Polynomials are linear combinations of positive integer powers. For example,

is a polynomial, but

is not.
(In case you're unfamiliar with the term, a linear combination of two quantities is the sum of scaled versions of those quantities, e.g. a general linear combination of
and
is
, where
are any numbers.)
is not a polynomial; the offending term is
, or
.