Acertain shampoo is available in two sizes. a 23.7-ounce bottle costs $4.97 . a 33.8 -ounce bottle costs $7.48. find the unit price for each size. then state which size is the better buy based on the unit price. round your answers to the nearest cent.

Bottle one will be better to buy based on unit price of the shampoo.

Step-by-step explanation:

For bottle one - amount of shampoo in unit price

=

=

= 4.8 ounce per dollar

For bottle Two -  amount of shampoo in unit price

=

=

= 4.5 ounce in one dollar

First bottle is better to buy because we are getting more (0.30 ounce) shampoo in one dollar.

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".