F(x)=square root of x shifted up 2 unita

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

If the discriminant if a quadratic equation is 4 which statement describes the roots?

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books