F
(
n
)
=
87 That’s Standard form
we are given
absolute value of 2 and 2 3rd and negative 9 over 4
Firstly , we need write it in terms of expression
2 and 2 3rd is

so, we get as

now, we can simplify it
Firstly , we will find common denominator


we can see that
all denominators are same
so, we can combine numerators


..............Answer
The answer to the problem is
y=1/2x
Y=50+35.95x
x is how many months you have it
y is how much you pay total