The center is at (13, k) and the radius is 8.

The center is at (k, 13) and the radius is 64.

The center is at (k, 13) and the radius is 8.

The center is at (13, k) and the radius is 64. - 16 - - - - - - The function f is defined by f (x ) = 1x − 4x I. What value of a satisfies f (5) − f (a) = −15 ? A) −20 B) 5 C) 10 D) 45 - 17 - - - - - - For the exponential function f, the value of f (0) is c, where c is a constant. Of the following equations that define the function f, which equation shows the value of c as the coefficient or the base? A) f (x ) = 22(1.5)x+1 B) f (x ) = 33(1.5)x C) f (x ) = 49.5(1.5)x−1 D) f (x ) = 74.25(1.5)x−2 Module