You can identify an expression by the number of the terms in the expression.
monomial = one term
binomial = two terms
and so on.

y contains only one term, so it is a monomial.
9q +

-

contains three terms, so it is a trinomial.
Answer:
the second one
Step-by-step explanation:
Answer:
2x - 4
Step-by-step explanation:
10x - 4 ( 2x + 1 )
= 10x - 8x - 4
= 2x - 4
The value of y when x is equal to 10 is 30. This is because for every value of x the value of y is 3. This can be known if you divide 24 by 8 you get 3. So if x=10 then y would equal 30.