Please help memwith this

The answer to your question is the letter B. 6 full pieces

Step-by-step explanation:

Data

Length of the board = 10 ft

Length of the pieces = 1 1/2 ft

Number of pieces = ?

Process

1.- Convert the length of each piece to a improper fraction

             1 1/2 = (2 + 1)/2 = 3/2

2.- Divide the length of the board by the length of each piece

                10/1 ÷ 3/2 = (10 x 2) / (3 x 1)

                                 = 20/3

-Simplify (convert to a mixed fraction)

                             6

                     3   20

                             2

-That means 6 full pieces

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18