Branched Alkane Naming

Provide an acceptable systematic IUPAC name for the following molecule

Provide an acceptable bond-line structure for Trans-1-isopropyl-2-methylcyclopropane

Draw all structural isomers of C$_6$H$_{14}$ and give the systematic name for each

Provide an acceptable bond-line structure for 4-ethyl-3,5-dimethylnonane