What is the difference between –12 and –5? what is the distance between –12 and –7 on a number line? units

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32