How to return store admin variables in magento2

Question

how simple would it be to do as in magento1

 Mage::getStoreConfig('general/store_information/name')

Answer 1

$this->_scopeConfig->getValue('general/store_information/name');

And the equivalent for

Mage::getStoreConfigFlag('path/goes/here')

is

$this->_scopeConfig->isSetFlag('path/goes/here'); 

but you have to make sure that the _scopeConfig member exists. if it doesn't inject it in the constructor. Like this:

protected $_scopeConfig;
public function __construct(
   ...,
   \Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig,
   ....
){
    ....
    $this->_scopeConfig= $scopeConfig;
    ....
}

As a side node...I think the answers to all 3 questions you asked regarding magento2, should give you an idea on how to inject something you need in the controller and use it later.