PP-PS1完整詳解版-V2[1].0

187058005607 7659item187058005610

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Unformatted text preview: ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 由由由由C 由由由由 $157,000, $168,000, $195,000, $235,000, and $256,000 由由由由由$10,000 由$157,000, $168,000, $195,000, $235,000, and $266,000 由由由由由 由由由由由 ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 80. 9169­!­item­!­187;#058&006279 If r and s are integers, and rs + r is odd, which of the following must be even? (A) r (B) s (C) r + s (D) rs ­ r (E) r2 + s 81. 9215­!­item­!­187;#058&006304 If each term in the sum a1 + a2 + . . . + an is either 7 or 77 and the sum equals 350, which of the following could be equal to n ? (A) 38 (B) 39 (C) 40 (D) 41 (E) 42 ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 由由由由C 由由由由 a1 + a2 + . . . + an由X由7 由Y由77 7X+77Y=350 X+11Y=50 (X,Y)由由39,1由(28,2) (17,3) (6,4) 由由 X+Y=N 由由由 40 30 20 10 由由由C ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ 82. 9378­!­item­!­187;#058&006496 An investment of d dollars at k percent simple annual interest yields $600 interest over a 2­year period. In terms of d, what dollar amount invested at the same rate will yield $2,400 interest over a 3­year period? (A) (B) (C) (D) (E) 83. 9589­!­item­!­187;#058&006669...
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