Answer:
-7-a
Step-by-step explanation:
2a-3a +5-12
-a - 7
or -7-a
The price was reduced by 25%
Answer:
Step-by-step explanation:
For this case we must determine the inverse of the following function:

Step 1:
We would write
or 
Step 2:
We clear x:


Step 3:
"x" and "y" are exchanged:

The inverse is:

Answer:
1 1/2
Step-by-step explanation:
Took the same thing