For this case we have the following equation:

Let 
We have:

By definition, given an equation of the form 
The quadratic formula, to find the solution can be written as:

In this case we have:

Substituting in the quadratic formula we have:
See attached image
Answer:
Option B
F(x)=x^2-4x+7
My work is attached below
Answer:
4.12
Step-by-step explanation:
Answer:
6.55
Step-by-step explanation:
divide 13.1 by the 2 hours your answer will be 6.55
T= 9 months= 9/12 year = 3/4 year
r=11%
A=2700=P(1+r*t/100)=P(1+11*3/4)=P(1+8.25)
so,P= 2700/9.25 =<span>291.89</span> thats the answer