Judy wants to buy juice boxes at the lowest unit rate. Which is the best buy?
(A) a single juice box for $1.00
(B) a package of 3 juice boxes for $3.00
(C) package of 6 juice boxes for $5.46
(D) a package of 10 juice boxes for $9.20

i think it is d, the pack of 10

Step-by-step explanation:

every juice box is 1 dollar, so the pack of 6, has one box at 46 cents, and the box of 10, has one box at the price of 20 cent

buying a 6 pack, and 4 one packs, will give you ten, but a bit more expensive. hope it helped!

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".

multiple all that

step-by-step explanation:

27×17