If f(1) = 3 and f(n) = f (n -1) - 3 then find the value of f (4)

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

Need showing work for this problem 56.25 ×25.80

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.