Question 1158340
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The easiest way is to calculate g(-2) first


    g(-2) = 5*(-2) + 7 = -10 + 7 = -3.


and then substitute this value  g(-2) = -3 into the formula for f(x).


So,  (fog) (-2) = f(-3) = 3*(-3)^2 + 2*(-3) - 1  = 27 - 6 - 1 = 20  is your answer.
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Solved.


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The meaning of this operation, &nbsp;(fog), &nbsp;which is called &nbsp;"the composition of functions g and f", &nbsp;is that

the output of &nbsp;"g" &nbsp;becomes the input for &nbsp;"f".