Answer:
real, rational
Step-by-step explanation:
Without knowing what the average number of students is, we know the number must be a real number, and must be rational. (An average of integers is always the ratio of two integers.) It may or may not be a natural number, whole number, or integer.
x=0 ,y=3
if you have any questions about the way I solved it,don't hesitate to ask
a is the answer i took the test
2x(3x-9x)
=2x(-6x)
=-12x^2
