What is f (-3) for the function f (a) = - 2a2 - 5a + 4?.

Question

Mathematics

Isla Avila

30 October, 20:12

What is f (-3) for the function f (a) = - 2a2 - 5a + 4?.

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Morgan · Answer 1

The answer is 1. f (a) = - 2a^2 - 5a + 4. If a = - 3, then to find f (-3) we have to substitute a in the general formula. f (a) = - 2a^2 - 5a + 4 = - 2 * a^2 - 5 * a + 4. Substitute a with - 3. f (-3) = - 2 * (-3) ^2 - 5 * (-3) + 4 = - 2 * 9 - (-15) + 4 = - 18 + 15 + 4 = 1