In 2012, the cost of 3 ounces of silver was $2,460. What was the cost for 1 ounce?

820 ounces

Step-by-step explanation:

$2,460 divided by 3 = 820 ounces

820 x 3 = $2,460

853.33

Step-by-step explanation:

So if three ounces of silver was $2,460 and you need to find the cost for one, you divide.

You divide the total cost for three ounces by how many ounces you got to get the unit rate.

$2,460 ÷ 3 = 853.33333...

The best solution to avoid an infinite answer is to round you answer down the the nearest hundredth which is 3.

Your final answer should be $853.33 per ounce of silver.

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".

i think 5 miles per hour

step-by-step explanation: