At the county fair, the operator of a game guesses a contestant’s weight. for each pound the operator’s guess differs from the contestant’s weight, the contestant will receive $3. if a contestant received $15 15 when the operator guessed 120 pounds, what are the possible values for the weight of the contestant?

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".

the answer would be  

a.

3: 1

step-by-step explanation:

answer: youre the sweetest thing for that