The final questions for SAT math

rebeccalin10UID: 2116329

I am taking the June SAT.while preparing for that, I got a few questions. Hope you guys can help me out:
+ k- w( ~! s1 N: X. c- AOffical Guide : 1.Page476/18  Page 490/12
                        2.Does "one half the x " mean 3/2x?
                        3.Page 535/15
# }3 [) }6 \5 Z1 l/ B8 `& w+ k- }A measuring cup contains 1/5 of a cup of orange juice. It is then filled to the 1 cup mark with a mixture that contains eaqual amounts of orange,grapefruit, and pineapple juices. what fraction of the final mixture is orange juice?

4.P585/15
    When it is noon eastern standard time in the New York city(EST), it is 9:00 a.m. Pacific standard time(PST) in San francisco. A plane took off form NY at noon EST and arrived in San Francisco at 4:00 p.m.PST on the same day. If a second plane left San Francisco at noon PST and took exactly the same amount of time for the trip, what was the plane's arrival time EST in NY?
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5.p585
11.  Z W Y X
    the sequence above maybe changed in either of two ways .Either two adjacent letters may be interchanged or the sequence may be reversed. what is the least number of such changes needed to put the letters int alphabetical order from left to right?
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6.P738/18 p738/20
( N* Y4 q& ?: i/ k5 }/ ?7.p796/20
8.p807/14