Answer:
36.36% probability that she gave birth to quadruplets
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcoes.
Desired outcomes:
Giving births to quadruplets.
She has 4 sets of quadruplets.
So 
Total outcomes:
At least 3 children(triplets).
7 sets of triplets and 4 sets of quadruplets.
So 
Probability:

36.36% probability that she gave birth to quadruplets
C or D
widest spread is about a range whichever has lowest OR/AND highest number is correct
Answer:
a ≤ b + 5
a + b ≥ 40
2.5
a + 1.5
b ≤ 105
Step-by-step explanation:
Answer:
y=2/3x+4
Step-by-step explanation:
y-intercept is 4
rise 2
run 3
Step-by-step explanation:
Let each let of chicken be C and dog be D respectively.
Then as per question
2C+4D = 28.......i
and
C-D =14........ii
These are the two algebraic equation which you are looking for solve them
to get the answer