Victory for the ACT Student Text 15e

380 • C AMBRIDGE P RACTICE T EST R EINFORCEMENT

8. ‘•Š—ƒ „—›• ƒ –‡Ž‡˜‹•‹‘ –Šƒ–…‘•–• ̈́͸ͲͲǤ ˆ –Š‡ •ƒŽ‡• –ƒš ‹• ͹ ǡ ™Šƒ– ‹• –Š‡ –‘–ƒŽ…‘•– ‘ˆ –Š‡ purchase? Ǥ ̈́ͶǤʹͲ Ǥ ̈́ͶʹǤͲͲ Ǥ ̈́ͶʹͲǤͲͲ Ǥ ̈́͸ͲͶǤʹͲ Ǥ ̈́͸ͶʹǤͲͲ 9. Šƒ– ‹• –Š‡ ˜ƒŽ—‡ ‘ˆ x x 2 2 3 ™Š‡ x 1 = − ? Ǥ 3 Ǥ 1 Ǥ 0 Ǥ 1 Ǥ 3 10. Šƒ– ‹• –Š‡ ƒ˜‡”ƒ‰‡ ‘ˆ n 3 ǡ n 2 1 ǡ ƒ† n 3 4 ? Ǥ n 3

DO YOUR FIGURING HERE.

5 6 Ǥ n 2 2 Ǥ n 3 3 Ǥ n 3 6 7 Ǥ n ͸ ͸

ˆ x

9 ǡ ™Šƒ– ‹• –Š‡ ˜ƒŽ—‡ ‘ˆ x x x 0 2 1 2 + + − ?

11.

Ǥ 77 Ǥ 76 Ǥ 5 Ǥ 4 Ǥ 3

1

2

1

2

7

18

1

81

1

81

?

4 3 3 27 +

=

12.

Ǥ

Ǥ

10 3 13 3 Ǥ 7 30 Ǥ ͸͵ Ǥ ͳͲͺ

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