You own a beauty salon where you not only cut hair but you also sell hair products. You buy a dozen barrettes for $18.00 and then sell them in your store for $2.00. You want to calculate your mark-up.

To do so, you multiply 2 by 12, subtract 18 and then divide by 12. Is this correct?

A) Yes.
B) No; you should divide 18 by 12 and then divide by 2.
C) No; you should divide 18 by 12, divide by 2 and multiply by 100.
D) No; you should multiply 2 by 12, subtract 18 and then divide by 18.

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)

“a term can be a signed number, a variable, or a constant multiplied by a + sign or j sign. in , the terms are 5x , 3y and 8. when a term is made up of a constant multiplied by a variable or variables, that constant is called a coefficient.” i hope this you.

the answer to this is a. a^2 + b^2 = c^2