Victory for the ACT Student Text 15e

384 • C AMBRIDGE P RACTICE T EST R EINFORCEMENT

25. ˆ –Š‡ ‡ƒ•—”‡ ‘ˆ –Š‡…‡–”ƒŽ ƒ‰Ž‡ ‘ˆ ƒ •‡…–‘” ‘ˆ ƒ…‹”…Ž‡ ‹• ͳʹͲιǡ ™Šƒ– ‹• –Š‡ ƒ”‡ƒǡ ‹ •“—ƒ”‡ —‹–•ǡ ‘ˆ –Š‡ •‡…–‘” ‹ˆ –Š‡ ”ƒ†‹—• ‹• ͸ —‹–• Ž‘‰ǫ Ǥ Ͷ r 26. ˆ –Š‡ •–ƒ–‡‡– Dz‹ˆ –™‘ –”‹ƒ‰Ž‡• ƒ”‡ ”‡†ǡ –Š‡ –Š‡› ƒ”‡ ‡“—ƒŽ ‹ ƒ”‡ƒdz ‹• –”—‡ǡ –Š‡ ™Š‹…Š ‘ˆ –Š‡ ˆ‘ŽŽ‘™‹‰ must „‡ –”—‡ǫ Ǥ ˆ –Š‡ –™‘ –”‹ƒ‰Ž‡• ƒ”‡ ‘– ‡“—ƒŽ ‹ ƒ”‡ƒǡ –Š‡ –Š‡› ƒ”‡ ‘– ”‡†Ǥ Ǥ ˆ –Š‡ –™‘ –”‹ƒ‰Ž‡• ƒ”‡ ‡“—ƒŽ ‹ ƒ”‡ƒǡ –Š‡ –Š‡› ƒ”‡ ”‡†Ǥ Ǥ ˆ –Š‡ –™‘ –”‹ƒ‰Ž‡• ƒ”‡ ‡“—ƒŽ ‹ ƒ”‡ƒǡ –Š‡ –Š‡› ƒ”‡ ‘– ”‡†Ǥ Ǥ ˆ –Š‡ –™‘ –”‹ƒ‰Ž‡• ƒ”‡ ‘– ”‡†ǡ –Š‡ –Š‡› ƒ”‡ ‘– ‡“—ƒŽ ‹ ƒ”‡ƒǤ Ǥ ˆ –Š‡ –™‘ –”‹ƒ‰Ž‡• ƒ”‡ ”‡†ǡ –Š‡ –Š‡› ƒ”‡ ‘– ‡“—ƒŽ ‹ ƒ”‡ƒǤ 27. ˆ b a t r ǡ –Š‡ ™Š‹…Š ‘ˆ –Š‡ ˆ‘ŽŽ‘™‹‰ ‹• necessarily true? Ǥ r a t b Ǥ t a r b Ǥ b a b t r t + = + Ǥ a b r t Ǥ at br 28. ˆ ( ) x x 2 5 2 5 2 − + = − − ǡ –Š‡ x ? Ǥ ͸ Ǥ ͷ Ǥ Ͷ Ǥ ͵ Ǥ ʹ Ǥ ͸ r Ǥ ͺ r Ǥ 10 r Ǥ 12 r

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