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Alex's friend Pablo comes up with an exact equation to find out how many bags he needs. Use his equation


to find out how many bags will actually be needed if B = x(2x+7)+3(2x+7)+(x+4) (2x +7), where the


quantity (2x + 7) equals 4. Show how you arrive at your answer.

Respuesta :

Answer:

8.5 bags are needed.

Step-by-step explanation:

Given : Number of bags needed [tex]B=x(2x+7)+3(2x+7)+(x+4)[/tex]

            [tex](2x + 7) = 4[/tex]

To Find :  how many bags he needs?

Solution :

[tex](2x + 7) = 4[/tex]

[tex]2x=-3[/tex]

[tex]x=-\frac{3}{2}[/tex]

Now we are given that Number of bags needed [tex]B=x(2x+7)+3(2x+7)+(x+4)[/tex]

Substitute the value of x

[tex]B=(\frac{-3}{2})(2(\frac{-3}{2})+7)+3(2(\frac{-3}{2})+7)+((\frac{-3}{2})+4)[/tex]

[tex]B=8.5[/tex]

Hence 8.5 bags are needed.

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