Sorry I don’t have roller
Hope it’s right
Best luck with your studying
Answer:
D
Step-by-step explanation:
to be a function you cannot have different y values for the same x, in B for example when x = 3 you have two different values for y (3,7) and (3,8)
D is the only choice where each value of x only has one value for y
Answer:
B. equivalent
Step-by-step explanation:
Our two equations are:


Let's use substitution and plug in the expression
for y in the second equation. That way, we're getting rid of a variable so we can solve for the other:





This means that there are an infinite number of solutions possible for this system - any x value will work. So, the answer is equivalent, because these two equations are essentially the same.
Change of base is

change base to 3

why would you want base 3? base 10 is on most calculators
anyway, the value would be 2.809555
Answer:
4
Step-by-step explanation:
P={1,2,3,4,5,6}
Q={3,4,5,6,7,8,9}
PnQ={3,4,5,6}
Therefore, n(PnQ) =4