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**URGENT HELP???!!!*

Suppose that b(x) varies directly with x and b(x) = 4325 when x= 25.

What is b(x) when x =19?

A.) 4325
B.) 3287
C.) 173
D.) 9.1

I can't remember how problems like these are suppose to go and how to write them out, could you tell me how you got the answer once you get it. Thanks ;)

Respuesta :

answer isΒ B.) 3287
hope that helps
..................................

4325/25 = 173

173 * 19 = 3287
lublana

Answer:

B.3287

Step-by-step explanation:

We are given that

b(x) varies directly with x.

b(x)=4325 when x=25

We have to find the value of b(x) when x=19

According to question

[tex]b(x)\propto x[/tex]

[tex]b(x)=kx[/tex]

Where k=Proportionality constant

Substitute the values then we get

[tex]4325=k(25)[/tex]

[tex]k=\frac{4325}{25}=173[/tex]

[tex]k=173[/tex]

Now, substitute the value of k then, we get

[tex]b(x)=173 x[/tex]

Substitute the value of x=19

Then, we get

[tex]b(x)=173 \times 19=3287[/tex]

Hence, option B is true.

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