Explanation:
Evaluate the function rule for the given value.
f(x) = 15x for x = 3
Substitute the value of x:
f(3) = 15·3
f(3) = 45 The answer is 45
Answer:
f(3) = 45
Substitute x = 3 into f(x) and evaluate
f(3) = 15 × 3 = 45
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