19. A salesman needed to sell a four-wheeler. He priced it at $3,500 the first day it was on the market. The
second day he reduced the price by 10%. What was
the price of the four-wheeler after this reduction?
A. $3,850
B. $3,465
C. $3,150
D. $3,000
HELP

C. $3150

Step-by-step explanation:

3500*.9=3150

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".

just needed some points but try socratic