72.5 as decimal or 72 1/2 as fraction

so... notice the example there, with 8
so.. you tell us, what is the relationship then?
Financial gain,beneficial, or useful
Answer:
The answer is D.
Step-by-step explanation:
(x+13)*(x-7)=0
Split into possible cases :
________________________
x+13=0
x-7=0
Solve the equations:
________________________
x= -13
x= 7
Final solution :