First find x in terms of f(x)
1/2 x = f(x) + 4
x = 2(f(x) +4)
x = 2f(x) + 8
Now replace x by the inverse function f-1(x) and the f(x) by x
f-1(x) = 2x + 8
f-1 (4) = 2(4) + 8 = 16
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One thing you want to make sure you do is move all terms with variables to one side and the constant terms to the other. It makes it so much easier to evaluate the variables once you do.
Solve for h by simplifying both sides of the equation, then isolating the variable.
h=a/2+1-3/a
Answer:
The interest rate is 0.0425%
Step-by-step explanation:
Mathematically;
I = PRT/100
From the question, I in this context is the difference between how much they have paid and the amount borrowed
Mathematically, this is ; 364,000-160,000 = 204,000
This is the interest
R is the rate = ?
T = 30 years
P is the amount borrowed = 160,000
thus, we have
204,000 = (160,000 * R * 30)/100
2040 = 4800000R
R = 2040/4800000
R = 0.000425 which is 0.0425%
Their are two solutions.
X = -2/7 = 0.286
X = 1