please name this compound

Question

CH3
|
CH=C-CH-CH-CH3
|
CH2
|
CH3

H H
\ /
C=C
/ \
CH3 CH2CH3

CH3-CH2 H
\ /
C=C
/ \
H CH2-CH-CH3
|
CH3

Answer 1

I would name the first one
3-methyl-3-heptene
The others don't make sense because of the spacing problem. (We can't space on the board).