The answer is
=
4
x
2
−
20
x
+
26
Explanation:
This is a composition of functions
f
(
x
)
=
2
x
−
5
g
(
x
)
=
x
2
+
1
g
(
f
(
x
)
)
=
g
(
2
x
−
5
)
=
(
2
x
−
5
)
2
+
1
=
4
x
2
−
20
x
+
25
+
1
=
4
x
2
−
20
x
+
26
f
(
g
(
x
)
)
=
f
(
x
2
+
1
)
=
2
(
x
2
+
1
)
−
5
=
2
x
2
+
2
−
5
=
2
x
2
−
3
g
(
f
(
x
)
)
≠
f
(
g
(
x
)
)
There is no image but I am happy to help if you attach one
160 is the answer to 8x20
Multiply to remove the variable from the denominator.
<span>Previous balance = 3529.30
APR = 18.6%, thus monthly interest rate = 18.6 / 12 = 1.55%
Previous balance + interest = 3529.30(1 + 0.0155) = 3584.00
New balance after transaction = 3584.00 + 148 = 3732.00</span>