In the following partial proof, what is the justification for line 9 ?

1. (R H) (S I)

2. (H L) (R S)

3. H (K T)

4. H L / I M

5. H 3 Simp

6. L 4, 5 DS

7. H L 5, 6 Conj

8. R S 2, 7 MP

9. H I _______

	a.	1, 8 CD
	b.	9, Simp
	c.	1, 8 MP
	d.	9, 5 DS
	e.	There is no justification; line 9 is a mistake.

Select the correct translation for the following statement:

Either Fiat improves mileage and Toyota closes a factory or Honda reduces inventory.

	a.	F (T v H)
	b.	F T v H
	c.	(F v T) H
	d.	(F T) v H
	e.	F v T H

1. Select the correct translation for the following statement:

   Hertz runs a sale or both Avis buys new cars and Budget lowers rates.

   	a.	H A B
   	b.	H (A B)
   	c.	(H A) B
   	d.	H (A B)
   	e.	H A B

Select the correct translation for the following statement:

Continental buys planes unless neither Northwest improves service nor United lowers fares.

	a.	C (N U)
	b.	C (N U)
	c.	C (N U)
	d.	C (N U)
	e.	(N U) C

Select the correct translation for the following statement:

Americans hiring pilots is a sufficient condition for both Deltas advertising a sale and Southwests expanding routes.

	a.	(D S) A
	b.	(D A) (S A)
	c.	(D S) A
	d.	A (D S)
	e.	A (D S)