"planar notions": points in the same plane are coplanar intersecting lines with exactly one point in common.

number 3 is your answer x<-y+4/2-4
The answer
y=−x^2−2x-24 is like the form of y=ax² +bx +c, to find the vertex we use the formula:
the x intercept according to the vertex is x=-b/2a, and the vertex V is a point such that V [-b/2a, f(-b/2a)]
the x intercept is x= -(-2) / 2(-1) =-1, and f(-1)= -1 +2 -24= -23
the vertex is V(-1, -23)
The question is an illustration of probability, and the value of P(B|C) is P(B|C) = 9/24 =0.38
<h3>How to determine the probability P(B|C)?</h3>
The table is given as:
C D Total
A 15 21 36
B 9 25 34
Total 24 46 70
The probability (BIC) is calculated using:
P(B|C) = n(B and C)/n(C)
From the table, we have:
n(B and C) = 9
n(C) = 24
So, the equation becomes
P(B|C) = 9/24
Evaluate
P(B|C) = 0.38
Hence, the value of P(B|C) is P(B|C) = 9/24 =0.38
Read more about probability at:
brainly.com/question/251701
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30 dollars
If she received 30 dollars in change then she paid with a 100 dollar bill