Which of the following expressions is equivalent to 18m - 12?

-3(-6m - 4)
2(-9m + 6)
-1(18m + 12)
6(3m - 2)

Step-by-step explanation:

we have the expression:

and we can express the number 18 by its factors like this:

and also the number 12:

so in both numbers we have a common factor of 6:

So we can factor the given expression by taking out the 6 of each coefficient, and we get the following:

which is the fourth option.

because they could drop even lower..

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour