What is the headline limit for expanded text ads?

What is the purpose of using a negative keyword in google adwords (Check all that apply)

How would you successfully track telephone calls:

Best type of remarketing to target people that have visited your website and looked at a specific product?

Which is a score that is based on your bid, auction-time measurements of expected CTR, ad relevance, landing page experience, and the expected impact of extensions and other ad formats?

Reviews extensions only appear on which of the following device/s?

What do you call putting an ad on a specific webpage of the Google Display Network?

Which is NOT a campaign option?

What is the traffic estimator?

To set a special promotion to go live at a certain time without manually turning it on, what feature would you use?

What is a negative keyword?