Answer: The number is

Step-by-step explanation: First that we know is that should build a polinomial function.
So, we have to substract 1 to a product of 4*x, where x= number that we need to find. The result of that is 2
The function is the next one: 4*x-1=2 ⇒ 4*x=2+1 ⇒ 4*x=3
x=
or x=0.75