Question

Let f(x) = 5x + 2 and g(x) = x2 – 1.
Find f(g(3))

Answer 1

Explanation:

f(x) = 5x + 2

g(x) = x2 – 1

Think of it like a sandwich:

first solve what g(x) will be equal to when x = 3 (this is what's given in "f(g(3))" )and then plug in the answer into the equation of f(x) to find the final answer

the resulting equation will look like this:

f(g(3)) = 5[(3)2 - 1] + 2

just solve using PEMDAS

= 5[6-1] +2

=5[5] +2

=10+2

=12

Answer:

f(g(3)) = 12

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Hope this helps! :)