Advanced MathEasy–MediumExponential equation with a shifted exponent
Advanced Math practice question
If 2^(x − 2) = 16, what is the value of x?
Answer: 6
16 = 2⁴, so x − 2 = 4 and x = 6.
Common wrong answers
- If you answered 2
- 2 subtracts instead of adding the shift.
- If you answered 4
- 4 is x − 2, not x.
- If you answered 18
- 18 adds 2 to 16 as if the exponent were the value.
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 ?
Not affiliated with the College Board. SAT is a trademark of the College Board.