please help with all parts. your help is appreciated. will upvote. need asap please

3. Give the IUPAC names for the following compounds ( 8 points) a) b) b) d) b) Draw the structures (use line angle formula or Lewis structure) for the following compounds (8 points) i) 5-(1'-methylethyl)-3,3,4-trimethyloctane ii) 3-(1',1'-dimethylethyl)-2-methylheptane iii) Two isomers for the formula C4H9N. iv) Two isomers of octane