Advanced MathEasy–MediumEvaluating an exponential function
Advanced Math practice question
The function f is defined by f(x) = 2ˣ + 3. What is the value of f(5)?
Answer: 35
f(5) = 2⁵ + 3 = 32 + 3 = 35.
Common wrong answers
- If you answered 13
- 13 computes 2 × 5 + 3, treating the exponent as a multiplier.
- If you answered 32
- 32 is 2⁵ alone, without the +3.
- If you answered 256
- 256 computes 2⁸, adding 3 to the exponent instead of to the result.
More Advanced Math questions
- Easy–Medium
If f(x) = 2x² − 3, what is f(4)? - Easy–Medium
Which expression is equivalent to (2x³)(3x⁴)? - Easy–Medium
What are the solutions to x² − 16 = 0? - Easy–Medium
Which expression is equivalent to (x + 5)²? - Easy–Medium
For x ≠ 0, which expression is equivalent to (x² + 3x) / x? - Easy–Medium
What are the solutions to the equation 2(x − 3)² − 32 = 0 ?
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