Advanced Math practice question

Answer: 3

f(0) = c = 4. Then f(1) = a + b + 4 = 5 gives a + b = 1, and f(−1) = a − b + 4 = 9 gives a − b = 5. Adding: 2a = 6, so a = 3.

Common wrong answers

If you answered 1

1 is a + b, not a alone.

If you answered 4

4 is c.

If you answered -2

−2 is b.

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