If f(x) = 5x – 3 and g(x) = 4x + 7, what is f(g(x))?
Help me pls!!!
is it:
A. 20x + 4
B. 20x – 5
C. 20x + 25
D. 20x + 32
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Help me pls!!!
is it:
A. 20x + 4
B. 20x – 5
C. 20x + 25
D. 20x + 32
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Answers & Comments
Verified answer
Substitute g(x) for f(x) and evaluate to get..
f(4x + 7) = 5(4x + 7) - 3
= 20x + 35 - 3
= 20x + 32 [D]
I hope this helps!
D: 20x+32
f(x) = 5x – 3
f(g(x)) = 5(4x + 7) - 3
=20x + 35 -3
=20x+32
option D
D ....put g(x) =y then find f(y)