Multiply.(4 - 6i)(4 - 3i)
A. 18i2 - 36i + 16
B. -2 + 36i
C. -2 - 36i
D. 34 - 12i
Answer: C
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Solve.Atmospheric pressure (in pounds per square inch) is a function of the altitude above sea level and can be modeled by 
where P is the pressure and a is the altitude above sea level in miles. Find the atmospheric pressure at 3.17 miles above sea level. Round your answer to the nearest hundredth.
A. 28.60 psi B. 0.62 psi C. 11.92 psi D. 7.55 psi
Solve.Is it possible to find a Maclaurin expansion for f(x) = x3 + 5x? Explain.
A. No, the function does not have fourth-order or higher derivatives at 
B. Yes, a polynomial function is equal to its Maclaurin expansion and has derivatives of all orders at 
Use implicit differentiation to find dy/dx.
= x2 + y2
A. 
B. 
C. 
D. 
Find any relative extrema.f(x, y) = 4xy - x2y - xy2
A. No relative extrema
B. f(
, 
) = 1.185, relative maximum
C. f(0, 0) = 0, relative minimum
D. f(
, 
) = 2.37, relative maximum