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If 3x^(3//2)=4 , then x=...

If `3x^(3//2)=4` , then x=

A

1.12

B

1.21

C

1.34

D

1.49

Text Solution

Verified by Experts

The correct Answer is:
B
Plot the graph of `y=3x^(3//2)-4` in the standard window and use CALC/zero to find the correct answer choice.
An alternative solution is to divide the equation by 3 to get `x^(3//2) = 4/3` and then raise both sides to the `2/3` power: `x=(4/3)^(2//3) = 1.21`.
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