HELP! Nomenclature in Chemistry!

What are the names of > http://twitpic.com/7ta0dl

Thanks!

1. 2,4-dimethylheptane

2. 3-methyl-4-heptanone

3. ethyl butanoate

4. 3-methylpentanal

5. (E)-5-methoxy-3-methyl-2-hexene

2,4dimethylheptane
2methly-4-heptanone
ethlybutanoate
3methylpentoic acid
not sure about 5