Answer:
B: N-5
Step-by-step explanation:
N-5 is the same as a number (n) minus 5. decreased could also mean minus or subtract in simpler terms
You do not say anything about the project.
Here is a multi-step equation for your unknown project:
3x - 5 = 40 + 2x
Total cost is $38.16
Multiply 36 by 0.06 (2.16)
Add 2.16 to 36 (38.16)