For this case, we have by definition, that an irrational number is a number that can not be expressed as a fraction
, where a and b are integers and b is nonzero.
Some examples are:

So, that the answer is 
Answer:
Option C
Answer:
"demand"
Step-by-step explanation:
Vocabulary question.
"Demand" refers to the quantity of goods and services that consumers are willing to buy at a given price.
<span>2a^2+ab+5ab+5b^2
2a(a+b) +5b(a+b)
(a+b)(2a+5b)</span>
Is 3.
3×3=9
Hope this helps!
Answer:
The answer is D, 80$ for three 1 hour lessons. I hope this helps :D