SOLUTION: find 4[g(f(2a+1))] if f(x)=5x+4 and g(x)=x-9

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Question 262773: find 4[g(f(2a+1))] if f(x)=5x+4 and g(x)=x-9
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
first find f(2a+1)
f(2a+1) = 10a + 9
second find g(f(2a+1))
g(f(2a+1)) = 10a
third 4 * answer is
4 * 10a = 40a