kimbroughtanish
kimbroughtanish kimbroughtanish
  • 11-01-2016
  • Mathematics
contestada

Which value for x makes the open sentence true?

10 • 8 – 3x + x2 ≥ x3 + x2

A.
6

B.
4

C.
5

D.
7

Respuesta :

taskmasters
taskmasters taskmasters
  • 11-01-2016
Answer is B. 4

10 * 8 - 3(4) + 4²    >     4³ + 4²
     80 -  12  + 16   >    64 + 16
                     84    >    80

All other choices are should have the inequality of < to make the sentence true.
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