What is the least common multiple {lcm} and the greatest common factor {gcf} of 9 and 12?

The LCM of 9 and 12 is 36. The GCF is 3

Step-by-step explanation:

To get the Least Common Multiple (LCM) of 9 and 12 we need to factor each value first and then we choose all the factors which appear in any column and multiply them:  2 x 2 x 3 x 3 = 36

To get the Greatest Common Factor (GCF) of 9 and 12 we need to factor each value, that should give you 3.

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72