What is 12.4 less then the sum of 19.23 and 10.02?

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

F(x)=x^3+4 question 6 options: the parent function is shifted up 4 units the parent function is shifted down 4 units the parent function is shifted left 4 units the parent function is shifted right 4 units

What are the exclude value of mn+3m