In Problems 1-15, state whether the indicated function is continuous at 3. If it is not continuous, tell why. Only complete problems woth a check mark
f(x)=(x-3)(x-4)
g(x)=x^(2)-9
h(x)=(3)/(x-3)
g(t)=\sqrt(t-4)
h(t)=(|t-3|)/(t-3)
h(t)=(|\sqrt((t-3)^(4))|)/(t-3)
f(t)=|t|
g(t)=|t-2|
h(x)=(x^(2)-9)/(x-3)
f(x)=(21-7x)/(x-3)
f(x)={(-3x+7 if x<=3),(-2 if x>3):}