SAT Math Practice Question #23749 - SATify | SATify

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SAT Math Practice Question #23749 - SATify | SATify

#23749

algebra

operations

medium

90 sec

The operation $⋆$ is defined for all nonzero numbers by $a ⋆ b = \frac{a}{b} + b$ . Determine $[(2 ⋆ 1) ⋆ 3] - [2 ⋆ (1 ⋆ 3)]$ .

A.

$- \frac{1}{15}$

B.

$- \frac{1}{5}$

C.

$0$

D.

$\frac{1}{15}$

E.

$\frac{1}{5}$