Answer:
what is the question here?
Step-by-step explanation:
Answer:

Step-by-step explanation:
You are correct down to the part where you add the partial results:

Answer:
5 children
Step-by-step explanation:
7 adults = $70
5 children = $25
total= 12 people
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therefore 5 children went
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Df(x): x∈[-3,-1] ⋃ [1,4]
Rf(x): -3 ≤f(x) ≤7
AX = B
1 -1 -1 x 0
0 -2 -1 y = -2
2 1 0 z -4
x
y = A^-1 B
z
x -1 1 1 0 6
y = 2 -2 -1 . 2 = -8
z -4 3 2 4 14