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. $252,810
B. $1,011,240
C. $126,405
D. $505,620
Answer: C
Mathematics
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The matrix is the final matrix form for a system of two linear equations in variables x1 and x2. Write the Solution of the system.
A. x1 = 3 x2 = 5 B. x1 = -5 x2 = -3 C. x1 = 5 x2 = t for any real number t D. x1 = 5 x2 = 3
Mathematics
Find the inverse function of f(x) = x – 5.
a. 
b. 
c. 
d. 
Mathematics
Evaluate the sum.
A. 50 B. 24? C. 50? D. 25?
Mathematics
Solve the differential equation.x
+ 2y = 5 - 
, x > 0
A. y = 
, x > 0
B. y = 
, x > 0
C. y = 
, x > 0
D. y = 
, x > 0
Mathematics