Answer:
Given,
f(x)=x^2+6
g(x)=2x-1
Now,
g[f(x)]=g(x^2+6) since f(x)=x^2+6
=2(x^2+6)-1 since x > x^2+6
=2x^2+12-1
=2x^2+11
You divide both the numerator and the denominator by the same number until they can't be reduced any further.
S = Sally
M = Mother
S = M/5 + 10
20 = M/5 + 10
20 - 10 = M/5
10 = M/5
M = 10 * 5
M = 50
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Her mother is 50 yo
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50 : 5 + 10 = 20
the answer is good