Michael buys a dozen donuts for his friends for $6 what is the unit rate

6 dollars per dozen

Step-by-step explanation:

This is a fraction equal to

6 dollars ÷ 1 dozen

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 1

6 dollars÷ 1

1 dozen÷ 1

=  

6 dollars

1 dozen

=  

6 dollars

dozen

= 6 dollars per dozen

 b+15 = g

Step-by-step explanation:

g = girls

b= boys

t= total students

If you wanted to solve it a different way you would do this:

(b + 15) + b = t