**urgent *

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. ; )

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

Where k=Proportionality constant

Substitute the values then we get

Now, substitute the value of k then, we get

Substitute the value of x=19

Then, we get

Hence, option B is true.

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".