10 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.
*show your work