$750, 7%, 3 years Oa. $15,750 Ob. $52.50 Oc. $157.50 Od. $15.75​

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Which choice has the correct steps in graphing the solution set to the following inequality? -45_> 20x-5y