10
Answer: CSet 1: Linear Functions (Intermediate)
Explanation
PROBLEM
If f(x) = 2x + 5, find f(a) when a = 3.
If f(x) = 2x + 5, find f(a) when a = 3.
A.
8
B.
10
C.✓ Correct
11
D.
13
Detailed Explanation
Choice C is the best answer. f(3) = 2(3) + 5 = 11
Why others are wrong:
A: 8 is incorrect because it does not satisfy the equation.
B: 10 is incorrect because it does not satisfy the equation.
D: 13 is incorrect because it does not satisfy the equation.
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