Me fast i need

kerry bought a pair of athletic shoes for $45. she also bought a pair of colorful shoelaces for the shoes for $4.

what percent of the total amount that kerry paid was the price of the shoelaces? round to the nearest tenth of a percent, if necessary.

a.
8.2%

b.
8.9%

c.
9.8%

d.
11.3%

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".

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign