29 ...................................................................................................
Answer:
Step-by-step explanation:
x
y
−
4
0
−
3
1
−
3
−
1
−
2
2
−
2
−
2
We have the next number
The expanded form of the number is
Also, we can verify that Alex was incorrect because if we do the sum of the expanded form that Alex calculated we obtain
Finally, the correct answer is
Answer:
B
Step-by-step explanation:
let's see, I'd the point on the line/boundary ?
for this we use the equality part (and use the coordinates of the point as x and y) :
-8 = 2×2² - 5×2 - 6 = 8 - 10 - 6 = -2 - 6 = -8
correct.
this proves that the point is on the line defined by the equation.
and that means it is on the boundary of the inequality.
because that inequality contains the boundary in the solution region (hence the >= relation instead of just >), we cannot use that point to determine which side of the boundary (incl. the boundary line, but still) is the solution region.
