25 points! show all work! image attached!

c) x = 24

d) x = -5

Step-by-step explanation:

c) Since they have the same base of 5 so

x + (-4) + (-8) = 12

      x - 4 - 8 = 12

          x - 12 = 12

                 x =  24

d) Since they have the same base of 2 so

x + 2 + 7 = 4

     x + 9 = 4

           x = 4 - 9

           x =  -5

the answer would be c:   ax + b = ax + c

step-by-step explanation:

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