GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Let the function h be defined by h(x)= x +2. If 3h(v) = 18,
[#permalink]
14 May 2019, 08:32
14 May 2019, 08:32
Expert Reply
00:00
Question Stats:
85% (01:20) correct
14% (01:41) wrong based on 7 sessions
Hide Show timer Statistics
Let the function h be defined by \(h(x)= \sqrt{x}+2\). If \(3h(v) = 18\), then which one of the following is the value of \(h (\frac{v}{4})\)
(A) –4
(B) –1
(C) 0
(D) 2
(E) 4
(A) –4
(B) –1
(C) 0
(D) 2
(E) 4
GRE Prep Club Tests Editor
Joined: 13 May 2019
Affiliations: Partner at MyGuru LLC.
Posts: 186
Given Kudos: 5
Location: United States
GMAT 1: 770 Q51 V44
GRE 1: Q169 V168
WE:Education (Education)
Re: Let the function h be defined by h(x)= x +2. If 3h(v) = 18,
[#permalink]
14 May 2019, 13:29
14 May 2019, 13:29
Expert Reply
If provided algebra on the GRE, first look to solve algebraically. In this case using the formula: h(x)=√x+2.
Since provided the information that 3h(v) = 18 ÷ the equation by 3 to determine that h(v) = 6.
Then, replace h(v) with √v+2 = 6 and subtract 2 from each side to find that √v= 4, before squaring the equation to find that v = 16.
Finally, use that value for v to find v/4 = 4 and plug 4 into h(x)=√x+2 to find that √4+2 = 4, which matches choice E.
Since provided the information that 3h(v) = 18 ÷ the equation by 3 to determine that h(v) = 6.
Then, replace h(v) with √v+2 = 6 and subtract 2 from each side to find that √v= 4, before squaring the equation to find that v = 16.
Finally, use that value for v to find v/4 = 4 and plug 4 into h(x)=√x+2 to find that √4+2 = 4, which matches choice E.
gmatclubot
Re: Let the function h be defined by h(x)= x +2. If 3h(v) = 18, [#permalink]
14 May 2019, 13:29
Moderators:
