What's 38.9 round to the nearest tenth?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30

How many and of which kind of roots does the equation f(x)=2x^4−9x^3+17x^2−16x+6 have?