1.50x + 450 = 3x
450 = 3x - 1.50x
450 = 1.50x
450/1.50 = x
300 = x
300 copies must be sold to break even
Let
x-------> the length side of the original cube
we have

Divide by
both sides

The system of equations is equal to
--------> equation 
--------> equation 
using a graphing tool
see the attached figure
we know that
the solution of the system of equations is the intersection both graphs
therefore
the solution is

therefore
<u>the answer is</u>

6300/9=700
the answer is 700
Answer:
2 is the bigger number
Step-by-step explanation:
Answer:
3+x
Step-by-step explanation:
because the word sum is only used in addition.
hope it helps! :)