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01 Oct 2018, 23:01
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
83% (01:16) correct
17%
(01:43)
wrong
based on 255
sessions
History
Date
Time
Result
Not Attempted Yet
The function f is defined by f (x) =√x − 20 for all positive numbers x. If p = f(q) for some positive numbers q and p, what is q in terms of p?
(A) (p + 20)^2
(B) √(p + 20)
(C) (√p + 20)^2
(D) √(p^2 + 20)
(E) (p^2 + 20)^2
(A) (p + 20)^2
(B) √(p + 20)
(C) (√p + 20)^2
(D) √(p^2 + 20)
(E) (p^2 + 20)^2
01 Oct 2018, 23:13
Kudos
Bookmarks
Bunuel
\(f(q)=√q-20=p.............√q=p+20.......q=(p+20)^2\)...A
OR
Take p=1, so √q-20=1.....q=(20+1)^2
Look in choices
Only A matches
