A because it will always be 99
Answer:
x=−4 /3
Step-by-step explanation:
Add 21 to both sides, so you get 9z = 81
The volume of the box in this problem doesn't really matter, considering that a cereal box is hollow. Assuming the surface area is 174 inches², then you can simply multiply 0.05 x 174, which is 8.7. Then put that number in the form of money to get $8.70. (seems a bit pricey for one cereal box to me ;P)