Question

**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 ;)

Answer 1

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

4325/25 = 173

173 * 19 = 3287

Answer 2

B.3287

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

`b(x)\propto x`

`b(x)=kx`

Where k=Proportionality constant

Substitute the values then we get

`4325=k(25)`

`k=(4325)/(25)=173`

`k=173`

Now, substitute the value of k then, we get

`b(x)=173 x`

Substitute the value of x=19

Then, we get

`b(x)=173 * 19=3287`

Hence, option B is true.