Answer:
The square of a monomial is 
Step-by-step explanation:
Consider the provided monomial.

We need to Write the expression as a square of a monomial.
The above expression can be written as:



Hence, the square of a monomial is 
Answer: B) 3+y+3
This can be simplified to y+6, but the current un-simplified expression has 3 terms.
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Explanation:
Terms are separated by a plus sign. If you had something like 10x-5y, then you would write that as 10x+(-5y) showing that 10x and -5y are the two terms.
Choices A and C, xy and 6y respectively, have one term each. They are considered monomials. Mono = one, nomial = name.
Choice D is the product of the constant 3 and the binomial y+3. Binomials have two terms.
Only choice B has three terms, though we can simplify it down to two terms. I have a feeling your teacher doesn't want you to simplify it.
A: number of nonfiction books
b: number of fiction books
a+b=2000
a=3b
b=500
a=1500
Answer:
x = 12
Step-by-step explanation:
12x = 146 - 2
x = 144 ÷ 12
x = 12