Perform the indicated operation and write the answer in the form 
where a and b are real numbers.(3 + 4i) - (-6 + i)
A. -3 + 5i
B. 9 + 3i
C. -9 - 3i
D. 9 - 3i
Answer: B
Mathematics
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Find the present value. Round to the nearest cent.
A. $23,775.16 B. $10,809.03 C. $10,767.52 D. $5,232.48
Mathematics
Provide an appropriate response.For the production function P = 5.4l0.741k0.517, find the marginal productivity functions 
and 
.
What will be an ideal response?
Mathematics
Find the axis of the graph of the function.f(x) = (x + 1)2 + 7
A. y = -1 B. x = 0 C. x = 1 D. x = -1
Mathematics
Write a quadratic equation in standard form with the given solution set.{-7i, 7i}
A. x2 + 49 = 0 B. x2 - 49 = 0 C. x2 - 14x - 49 = 0 D. x2 + 14x + 49 = 0
Mathematics