I don't need all of them answered, just one with a really in depth explanation and I can apply that information to the others.

6. At what points are the functions continuous? a.) y = e72+2 + |x+3 x2 - 5x - 14 b. y = 3x2 + 10x +8 c.) y = sin(4x) + x - 2x +4 d.) y = V6 - 8x e.) y = sec(3x) 3/4x + 7 f. ) y = sin(x)