Simplify. Assume that variables can represent any real number.
A. -7
B. -7b
C. -7b3
D. Not a real number
Answer: B
Mathematics
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Find all the first order partial derivatives for the following function.f(x, y) = 
A. 
= 
; 
= 
B. 
= - 
; 
= - 
C. 
= - 
; 
= - 
D. 
= - 
; 
= - 
Mathematics
Evaluate the line integral along the curve C.
ds , C is the curve r(t) = 3ti + (2 cos 2t)j + (2 sin 2t)k , 0 ? t ? 
?
A. 
?2 + 4
B. 
?
C. 
+ 2
D. 
?2 + 2
Mathematics
Determine whether the graph opens upward or downward.y = x2 - 8x + 18
A. Upward B. Downward
Mathematics
Provide an appropriate response.Write an expression that illustrates the quantity described.The cost of z pounds of candy that sell for $3.24 per pound.
A. $3.24z B. $3.25z C. $3.24 D. $z
Mathematics