Every two years, one of the leading web marketing firms and tool developer Moz produces results of their survey on search ranking factors. Below are their findings. Note that it is not clear how exactly they estimate the values and the total points, but in general, their guidelines are valuable.

Yes, you will. All our web design packages provide this option.

We follow Google recommendations on how to approach mobile devices. A website created for view via mobile devices is called by Google a "responsive website". Responsive website design automatically changes the website layout to optimize to a desktop screen, tablet, or any smart phone. This is achieved via CSS coding at the back-end. 

This is a very good strategy for business owners because responsive web design eliminates the need for multiple versions of your site; you don't need to hire a developer to build an expensive app for your business; you no longer need an “app” because your website does what the app would (minus all the development and maintenance costs.) You have one website but with multiple versions at a much lower price than the cost of an app.