Solve the equation for exact solutions.tan-1(x + 2) + tan-1x = tan-1 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve.A tax of $3,784 is added to a bulk order's price of $34,400. Find the sales tax rate.
A. 11% B. 1.1% C. 0.9% D. 9.1%
Mathematics
Using the given zero, find all other zeros of f(x).i is a zero of f(x) = x4 - 4x3 + 2x2 - 4x + 1
A. -i, 2 + 2
, 2 - 2
B. -i, 1 + 
, 1 - 
C. -i, 2 + 
, 2 - 
D. -i, -2 + 
, -2 - 
Mathematics
Find the exact value of y, or state that y is undefined.y = sin-1 (-3)
A. ? B. 0 C. -3 D. undefined
Mathematics
Solve the problem.In a chemistry class, 8 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 4.0 L B. 5.0 L C. 3.0 L D. 8.0 L
Mathematics