Victory for the ACT Student Text 15e

382 • C AMBRIDGE P RACTICE T EST R EINFORCEMENT

17.  ƒ…‹”…Ž‡ ™‹–Š ƒ ”ƒ†‹—• ‘ˆ ͸ǡ ™Šƒ– ‹• –Š‡ †‡‰”‡‡ ‡ƒ•—”‡ ‘ˆ ƒ ƒ”…™Š‘•‡ Ž‡‰–Š ‹• 3 ? r Ǥ

DO YOUR FIGURING HERE.

ʹͲι Ǥ ͵Ͳι Ǥ ͸Ͳι Ǥ ͻͲι Ǥ ͳʹͲι Ǥ 3 Ǥ ͸ Ǥ 2 Ǥ ͵ Ǥ ͻ ˆ ( ) ˆ x 3 2

ǡ ™Šƒ– ‹• –Š‡ ’‘•‹–‹˜‡ ˜ƒŽ—‡ ‘ˆ x ?

2 3 2

18.

x

and ( )

ǡ ™Šƒ– ‹• –Š‡

f x x x 2 2 = − ˜ƒŽ—‡ ‘ˆ ( ( )) g f 2 ? Ǥ ͺ Ǥ Ͷ Ǥ 2 Ǥ 0 Ǥ 3

g x x 4 = −

19.

Šƒ– ‹• –Š‡ •‘Ž—–‹‘ •‡– ‘ˆ –Š‡ ‡“—ƒ–‹‘ x 5 2 7 − = ? Ǥ ȓ 1 ǡ ͸Ȕ Ǥ ȓ 1 Ȕ Ǥ ȓͳȔ Ǥ ȓ͸Ȕ Ǥ Š‡ ‡’–› •‡– 3 ‹• †‡ϐ‹‡†ǡ ‹– ‹• ‡“—‹˜ƒŽ‡– –‘ ™Š‹…Š ‘ˆ –Š‡ ˆ‘ŽŽ‘™‹‰ ‡š’”‡••‹‘•ǫ Ǥ x 1 1 Ǥ 3 1 Ǥ x 1 Ǥ x 3 2 Ǥ ͵ Š‡ x ( x x 1 3 )

20.

21.

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