I need help

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is

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

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?