If f(x) = 2x – 6 and g(x) = x – 2x2 , find each value.

Question

1.f(2)

2. f (−12)

3. g(–1)

4. g (−13)

5. f(7) – 9

6. g(–3) + 13

7. f(h + 9) 15. g(3y)

8.2[g(b) + 1]

Answer 1

We simply substitute what's inside the parentheses for x.

f(2) = 2(2) - 6 = 4 - 6 = -2

2[g(b) + 1] = 2[b - 2b² + 1] = 2b - 4b² + 2

The rest are on you.