Find the determinant of the given matrix.
A. 7
B. -7
C. 5
D. -5
Answer: A
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Solve the problem.For x > 0, sketch a curve y = f(x) that has f(1) = 0 and f '(x) = - 
. Can anything be said about the concavity of such a curve? Give reasons for your answer.
What will be an ideal response?
Determine if the proportion is true or false.
= 
A. True B. False
Find the equation of the tangent line at the given point on the curve.2xy - 2x + y = -14; (2, -2)
A. y = - 
x + 
B. y = - 
x + 
C. y = 
x - 
D. y = 
x - 
Give an appropriate response.James adds two numbers: a + b. Sally adds the same two numbers but reverses the order: b + a. What property of addition assures us that James and Sally will get the same sum?
A. the associative property of addition B. the addition property of mathematics C. the identity property of zero D. the commutative property of addition