If f(x) = 3x + 2 and g(x) = x2 + 1, which expression is equivalent to (f * g) (x)

 f(x) = 3x + 2 and g(x) = x² + 1
⇒(f * g) (x) = ( 3x + 2 ) × ( x² + 1 ) 
                  = 3x³ + 2x² + 3x +2

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm

Idon’t know what the answer is i wish i could