If k is the constant in the expression x2 – x + k and the expression
has a value of 0 when 3 is substituted for x, what is the value of the
expression when 2 is substituted for x?
(A) -4 (B) -2 (C) 6 (D) 8 (E) Cannot
be found.
An office has two copying machines> Machine X can reduce the
size of a page and produces copies, in either the reduced or original size,
at the rate of 1 page per second. Machine Y cannot reduce pages and
produces copies at the rate of 1 page every 2 seconds. What is the least
amount of time required for the two machines together to make 60 copies of
a 120 page if exactly half of the pages of each copy of the report must be
reduced?
(A) 1 hour (B) 1 hour 20 minutes (C) 1 ½ hour (D) 2
hours (E) 3 hours
Of the following, which is the closest to 1?
(A) 1 + 0.04 (B) (1 – 0.04)2 (C) 1- (0.04)½ (D) 1 + 0.042
(E) 1
2007-04-04
03:06:05
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4 answers
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asked by
Anonymous
in
Mathematics