Answer:
the first option, I believe is correct
Step-by-step explanation:
The correct answer is 558
At 0 hours: 24 boxes
After 1 hour: 24/2 = 12 boxes
After 2 hours: 12/2 = 6 boxes
After 3 hours: 6/2 = 3 boxes
She will have 3 boxes after 3 hours.
Hope this helps :)
Answer: 
Step-by-step explanation:
You can use the Method of substitution.
Substitute the equation
into the equation
and then you must solve for the variable x:
Apply Distributive property:

Subtract 12 from both sides of the equation and then add the like terms. Then you get:
