5th grade math. correct answer will be marked brainliest

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

Which statements regarding efg are true? check all that apply.

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b