Can someone pls help me find this ASAP!

When can u say there is no solution for a system of linear inequalities? explain your answer and show with a system and graph

Farnesene is a sesquiterpene. how many different isomers arising from double-bond isomerizations are possible? g

Three friends went on a road trip from phoenix, az, to san diego, ca. mark drove 50 percent of the distance. jason drove 1/8 of the distance. andy drove the remainder of the distance. 1. andy thinks he drove 1/4 of the distance from phoenix, az, to san diego, ca. is andy correct? 2. the distance from phoenix, az, to san diego, ca, is 360 miles. how many miles did each person drive? 3. solve the problem. what is the answer in total?