How do you solve -3.6 (4+3) + 7.9 (-2.4)

step-by-step :

the formula for the equation of a circle is (x – h)2+ (y – k)2 = r2, where (h, k) represents the coordinates of the center of the circle, and r represents the radius of the circle. if a circle is tangent to the x-axis at (3,0), this means it touches the x-axis at that point.

b, i believe, but not sure.