Here is the table with the filled in answers
Let r represent cost of each box.
We have been given that Mia bought 10 boxes of brownies. So cost of 10 boxes would be
.
We have been given that Mia bought 10 boxes of brownies at the store for a total of $64. The tax on the purchase was $5. So the total cost of 10 boxes would be cost of 10 boxes plus tax.
We can represent this information in an equation as:

We can subtract 64 from both sides as:


Therefore, our required equation is
and option 'c' is the correct choice.
Given coordinates (0,0) and (34,-78).





Distance = 2(42.544) ≈ 85.09.
Therefore, distance from the origin (0,0) to the point (34,-78) is
85.09 units.
You have:
2r

6r-21
then move the 6r over to the left and you end up wtih
-4r

-21
Then you divide by -4 and when you do you must flip the inequality so your answer would be
r

21/4