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Unformatted text preview: at the end of the year was 3 times the amount of that portion of her monthly take­home pay that she did not save. If all the money that she saved last year was from her take­home pay, what fraction of her take­home pay did she save each month? (A) 1/2 (B) 1/3 (C) 1/4 (D) 1/5 (E) 1/6 63. 7612­!­item­!­187;#058&005607 For which of the following functions is f(a + b) = f(a) + f(b) for all positive numbers a and b ? (A) f(x) = x 2 (B) f(x) = x + 1 (C) f(x) = √x (D) f(x) = 2/x (E) f(x) = ­3x 64. 7659­!­item­!­187;#058&005610 If in a certain population, people are born at an average rate of 9 people every 2 seconds and people die at an average rate of 3 people every 2 seconds, by approximately how many people does the population increase in 1 day? (A) 17,280 (B) 25,920 (C) 129,600 (D) 259,200 (E) 388,800 ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 由由由由D 由由由由 born at an average rate of 9 people every 2 seconds由die at an average rate of 3 people every 2 seconds 由由由由由由由由由6由由 6× 60 × 60 × 24 = 259200 2 ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 65. 7870­!­item­!­187;#058&005675 For how many integers n is 2 n = n2 ? (A) None (B) One (C) Two (D) Three (E) More than three ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 由由由由C 由由由由 2 and 4 由由由由 ­­­­­­­­­­­­­­­­­­­­­­­­­­­­...
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This note was uploaded on 12/05/2012 for the course BUSINESS Finance taught by Professor Zheng during the Winter '05 term at Xiamen University.

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