What is the formular for the quadratic equation

ax^2 + bx + c = 0

Plug in the values of a, b and c, and then do the calculations.                                                                                                                                                      

the money supply is the total amount of money available in the economy. how do changes in the money supply affect people and businesses?

the invasive species was introduced due to commercial purpouses, as there was a demand for fur clothes and hence, a business opportunity connected to this product. actually, it was when the nutrias scaped, causing harm to the us ecosystems when they acquired the status of invasive species. in this case they have caused an environmental problem, but it could have affected also economic interests or even human health.