Respuesta :

mathstudent55
Let the function equal 416 and solve for x.

2x^2 - 6x = 416

2x^2 - 6x - 416 = 0

x^2 - 3x - 208 = 0

(x - 16)(x + 13) = 0

x - 16 = 0   or   x + 13 = 0

x = 16   or   x = -13

Since the number of rows cannot be negative, discard the -13 solution.

Answer: There are 16 rows.


popalabdulqayou
The answer is D.
f(x) = 2x^2-6x
416=2x^2-6x
208=x^2-3x
0=x^2-3x-208
0=(x-16)(x+13)
x=16 x can not be equal to -13.
Hopes this loves.

Otras preguntas