Answer:
$12.5(at least) would be needed to induce Lisa for driving Uber instead of working on web designing.
Explanation:
Lisa makes $25 per job on web designing from her home and in the first hour she can complete 2 additional jobs. But as per the question by the eight hour she can only do .5 jobs which means that for the eight hour she would earn -
.5 x $25 = $12.5 ( per job she gets $25)
So if Lisa goes on doing work as uber driver she is going to loose $12.5 in the eight hour , so we can say that if Lisa is offered $12.5 hourly rate to work as cab driver then she is not going to miss out on the money she would have made as web designer from home.