**8. An ad campaign results in 12 sales, following a conversion rate of 5% and a click-through-rate of 2% What is your cost per acquisition if your campaign costs $0.50 por click? .50 9. Assume that a law firm paid $4 CPC to send traffic to its website using PPC and that the conversion rate was 10%. Assume that they also run retargeting ads that cost $100 CPM and get a 2% CTR to the same landing page (also a 10% conversion rate). What is the difference in performance between the 2 campaigns, in terms of cost per acquisition? DE 12. An ad network quotes you an ad package option that would make you pay $20/lead. Or you could opt for a different option that would make you pay $30 CPM. Assuming your website generally converts high at 10%, what would your click-through-rate have to be on the CPM ads in order for the two ad options to be equal? zoo