Advanced MathMediumBase of a power from an equation
Advanced Math practice question
If 3 · bˣ = 24 when x = 3, and b is positive, what is the value of b?
Answer: 2
b³ = 8, so b = 2.
Common wrong answers
- If you answered 4
- 4 halves 8.
- If you answered 7
- 7 solves 3b = 24 minus 1, a slip; 3b³ = 24 gives b³ = 8.
- If you answered 8
- 8 is b³.
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