Answer:

Step-by-step explanation:
<u>Quadratic Function</u>
Standard Form of Quadratic Function
The standard representation of a quadratic function is:

where a,b, and c are constants.
When the zeros of f (x1 and x2) are given, it can be written as:
f(x)=a(x-x1)(x-x2)
Where a is a constant called the leading coefficient.
We are given the two roots of f: x1=-3 and x2=4, thus:
f(x)=a(x+3)(x-4)
We also know that f(5)=8, thus:
f(5)=a(5+3)(5-4)=8
Operating:
a(8)(1)=8
Solving:
a=1
The function is:
f(x)=1(x+3)(x-4)
Operating:

X = 8
because 8 x 2 = 16
16 - 9 = 5
5 x 3 = 15
Answer:180
Step-by-step explanation:
With a 15 year or 180 month mortgage they will pay out $133,680.60 compared to the 30 year or 360 month mortgage they will pay out $183,988.80 which is $50,308.2 more. So they would save $50,308.2 if they select the 15 year mortgage.
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