Answer:
The Answer is 129
Step-by-step explanation:
We substitute x + 3 for X in F(x):
f(g(x)) = (x + 3)^3 +4
f(g(2)) = (2 + 3)^3 + 4
=125 + 4
=129
So,
To find the percentage that the copper comprises, just divide the amount of copper by the total amount of metal in the coin. In this case, we will change the denominator so that it is 100, which can easily be converted into a percentage, which is really just a fraction out of 100.

75%
75% of the metal in the coin is copper.
Answer:
c
Step-by-step explanation:
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For this you have to solve for m in the equation 6m+4=8m
Subtract 6m from both sides and you will have 4=2m
Now you divide by 2 and you will get 2=m
now look at this equation 4m=?
Plug in the answer you got from before, which is 2. This means 4m=8