Determine whether the given function is one-to-one. If it is one-to-one, find its inverse function.f(x) = x2 - 9
A. one-to-one function; f-1(x) = x2 + 9
B. one-to-one function; f-1(x) = x + 9
C. one-to-one function; f-1(x) = x2 - 9
D. not a one-to-one function
Answer: D
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Determine whether the given function satisfies Laplace's equation.f(x, y, z) = cos (5x) sin (3y) e(
z)
A. Yes B. No
A partial payment is made on the date(s) indicated. Use the United States Rule to determine the balance due on the note at the date of maturity. (The Effective Date is the date the note was written.) Assume the year is not a leap year. 
A. $5163.74 B. $5047.15 C. $5208.39 D. $5220.96
Estimate the sum or difference by rounding each number to the nearest hundred.
A. 400 B. 328 C. 1600 D. 300
Describe the end behavior of the function.f(x) = 4-x sin 5x
A. 
f(x) = ?
B. 
f(x) = 0
C. 
f(x) = 0
D. 
f(x) = ?