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GRE Prep Club Legend  Joined: 07 Jun 2014
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If 3t3 – 7 = 74, what is the value of t2 – t? [#permalink]
Expert's post 00:00

Question Stats: 100% (00:41) correct 0% (00:00) wrong based on 9 sessions
If $$3t^3 - 7 = 74$$, what is the value of $$t^2 - t$$?

(A) –3
(B) 3
(C) 6
(D) 9
(E) 18
[Reveal] Spoiler: OA

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Sandy
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Re: If 3t3 – 7 = 74, what is the value of t2 – t? (A) –3 (B) 3 ( [#permalink]
sandy wrote:
If $$3t^3 - 7 = 74$$, what is the value of $$t^2 - t$$?

(A) –3
(B) 3
(C) 6
(D) 9
(E) 18

Given

3$$(t)^3$$ -7 = 74

3$$(t)^3$$ = 81

$$(t)^3$$ = 27

$$(t)^3$$ = $$(3)^3$$

t = 3.

Question :

$$(t)^2$$ - t

=$$3^2$$ -3

= 6

The best answer is C. Re: If 3t3 – 7 = 74, what is the value of t2 – t? (A) –3 (B) 3 (   [#permalink] 18 Jul 2018, 12:29
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