The first one is A and then the next one I believe should be 210 for both
The answer would be B.
For these, you plug in 8 where there ia a variable. 2(8)-1=15
Answer:
c
Step-by-step explanation:
as the roots are imaginary so it does not intersect x-axis.
C
Not addition, since

and 0 doesn't belong to the set.
Not subtraction, since

.
It is closed under multiplication. The set appears to contain all non-zero multiples of 3.
Not division, since dividing some of the numbers results in rationals which do not belong to the set.
What other operations are you supposed to consider?
Slope formula:
y2 - y1
_____
x2 - x1
5 + 16
_____
18 + 8
21
__
26
slope is 21/26