SOLUTION: If f(x) = 2x and g(x) = 5x + 2, what is (f • g)(x) when x = 3?

Question 1193928: If f(x) = 2x and g(x) = 5x + 2, what is (f • g)(x) when x = 3?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39620)   (Show Source): You can put this solution on YOUR website!
You are saying you need to find the product of two functions, evaluated for x=3.

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Answer by ikleyn(52798)   (Show Source): You can put this solution on YOUR website!
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Calculate f(3) and g(3) separately, by substituting the value of 3 instead of x into each function.

Then multiply two integer numbers, which you get for each function.

That's all.     There is nothing easier than that in Algebra.

Do not calculate the product of two polynomials, since it is unnecessary excessive work.

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