Use an equation to solve the problem.The value of an object that depreciates in value every year for n years is $P
, where P is the initial price. How much would a radio that you bought 6 years ago for $31 currently be worth?
A. $49.60
B. $12.40
C. $0.20
D. $0.40
Answer: B
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Give an appropriate answer.Given the function f(x, y, z) and the positive number ? as in the formal definition of a limit, find a positive number ? as in the definition that insures 
< ?.f(x, y, z) = x + y - z ; ? = 0.09
What will be an ideal response?
Find the inverse of the function.f(x) = x2 - 4, x ? 0
A. f-1(x) = - 
B. f-1(x) = - 
C. f-1(x) = x2 + 4
D. f-1(x) = 
Solve the problem.The manufacturer of a CD player has found that the revenue R (in dollars) is
when the unit price is p dollars. If the manufacturer sets the price p to maximize revenue, what is the maximum revenue to the nearest whole dollar?
A. $592,900 B. $148,225 C. $296,450 D. $1,185,800
Solve the following system by any appropriate method. If there is no real number solution, so state.2x2 - 2y2 = 102x2 + 5y2 = 38
A. (3, 2), (2, 3), (-3, -2), (-2, -3) B. (3, -2), (3, 2) C. (-3, -2), (-2, -3) D. (3, 2), (3, -2), (-3, 2), (-3, -2)